(A-kun: Hehehey... Anyways... I did the normal route but then mixed with Kiritsugu Emiya route to cripple Kevin since that what I want to do to him. Anyways

Kevin's eyes has blanked. as he saw the city were infested with honkai radiation and beast. He gritted his teeth and rushed into the City. 

"Help!"

A voice yelled, It was a plead of help. Kevin approach him and killed the honkai beasts that surrounded him, the guy that yelled for help look into the eye of the hero, it was all empty and sad, he felt a little sympathy but he didn't really care about it, it's about his survival that matters

Kevin: Follow me

The man followed Kevin, alongside with other survivors, With late coming to the other survivors all he could do is grit his teeth. With every death it kind of affect his performance. He couldn't save others due to the voices that pleaded for him and for others that potentially would help him. After that apocalyptic event end he leaved and walked home. It was traumatizing for him. He already told himself that he doesn't care about people yet... why does he cared about those pesky people. The same people who once treated him badly or so he thought

Reina: Kevin... Kevin...

Kevin's mother called him

Kevin: Mama, sorry, my eyes and hearing got blurry. What is it?

Reina: What do want to do in the future

Kevin: What do I want to be... A bird

Reina: No, what do you want to do, in the future

Kevin: I... want to be like Uncle Siegfried

Reina: *smile* Do you want to be a hero?

Kevin: Yes! I want to be a hero! I want to save people from weird things like Uncle Siegfried's pets

Reina: *giggle* But being a hero isn't easy, Kevin

Reina look down and frowned 

Reina: Being a hero, means you have to sacrifice yourself for the people. You may failed but you will win, It's mostly risk take but you have to

Kevin then looked like his PE counterpart

Kevin: Humanity shall prevail with my power, I shall protect the weak

Reina: Hahaha... Is that so?

Kevin: Yes

Reina: Then what is your goal as a hero?

Kevin: Protect everyone and specially I care

Kevin returned his face and smiled

Kevin is currently standing in the City center with people's name picture, flowers and bouquet  death that he failed to protect, feeling lost, not realizing his goal was again yet remained to follow his own oath and the Kaslana's oath

???: Don't you dare approach her

???2: I'm not, Cos-chi

???: How the hell do you even know us?!

???2: From a friend, Oi! Kevin c'mere!

Kevin look to his side and saw the one who saved him from death, It was Akira

Akira: Oi! c'mere you hero

???: It's you

(Just without the horns)

Kevin approach the three. Looking at them they were familiar, Light sky blue hair with purple eyes, and a green haired teen with amber eyes seemingly to protect his little sister

Kevin: Kosma and Griseo, am I right?

Griseo: Cos-chi! He called our name, Mr Hero called our name

(https://thelostcity272.lofter.com/post/1f43a25b_1cd27d8b8)

Kevin: Mr... Hero

Akira pat his shoulder

Akira: To remove some burden to that shoulder

Akira summoned a foster parent file and their birth certificate, he placed a smug

Akira: You need to be a father!

Kevin: What?...
__________________

Estate Agent: And here's the card for Maam Mobius, Eden oohh the great opera singer, Elysia, Aponia, Vill-V what a unique and interesting name, Sakura, Pardofelis, Hua, and little Griseo

Griseo was happy to recieve her estate card

E.A.: And then for the mates here's the card for Sir Su, Kalpas, Kosma

Kosma took his card

E.A.: And yours at the top

The Estate Agent put the card at the stacked his cards

E.A.: And that's all, is there other house members? your wife?

Kevin: She's working abroad

E.A.: Oh, I see. Well then, Kevin Kaslana. I'll look forward for you on saving the world, that's what a knight is right? and thank you for your patronage

Kevin looked down

Kevin: Yeah

The Estate Agent has left with the enormous stacked papers 

Entering the mansion from the gate is already astonishing but this is just merely an infrastructure for Kevin though it has well grown crops and the statue of the holy maid above the fountain and their own estate. They're now arrive at the

Kevin: We're here

Kosma: Kevin

Kevin: What is it Kosma

Kevin answered as he opened the door

Kosma: Are you really sure about this?

Kevin: You both a essential for the future of humanity. As well, I have to be a father for you two

Kosma: We'll become like you?

Kevin: I won't let Griseo fight but if you want we can start tomorrow

Kosma: Thank you

Kevin: I didn't do anything

They entered the mansion

Kosma: Why mansion though... isn't that expensive?

Kevin: Yes, but it's in my salary and I have to take more people to live here to

Griseo: Papa Kevin

Kevin: What is it, Griseo

Griseo: Why do you look sad?

Kevin: ...

Kevin silenced as he looked away

Kevin: It's nothing to worry about... This face is just stuck

Griseo: I... want to help

Kevin: Just be happy, then you'll help me

Griseo nodded

Kevin: What does she likes

Kosma: Painting and sometimes imitating people

Kevin: I see... You two find your room then I'll help. 

Kosma: Thank you again, D-...

Kevin: You can call me whatever you want...

Kosma: Dad... We'll be choosing our rooms so... 

Kevin: Sure

Kevin felt a bit of happiness and left
__________________

Calling Su the Flame chasers were relieved that he was alive

Su: Where are you now?

Kevin: The Outskirts of Arc City, town of cheng

Su: Good... Send your coordinates and we'll go there, we'll get you and keep this going

Kevin: No... I'll be getting you all

Su: W-Why?

Kevin: We have task to do first, finding other members, Those are not with us are coming in this city, they're only 4 left. Vill-V, Mobius, Kalpas and Pardofelis and I need you all.

Su: I see... just let us know if you need something okay?

Kevin: Yes

Kevin went to the teen and his sister to help them out
____________________

Taking a bath in the tub in the room or Taking a bath in the bathtub of the bathroom, Kevin look up, the stars were visible as in the way how milkyway glow above. Standing and putting the lights off he look at the stars and wonder, where is his path will come. He swore to never care about humans yet protected them with all of his strength, he swore the Project: STIGMA will continue yet hesitated to go to Heliopolis or going back in Egypt to take it as someone who could provide it. PE KEVIN Kaslana has already came back yet... he couldn't came back to see that man's face, to see his own face, a face of eternally despaired man just like how he is now. He knows KEVIN than anyone, he knows himself yet couldn't change himself. The history truly repeats itself

Few days later

Still on Mansion. Kevin 

It was late at Night and Griseo was on Kevin's arm sleeping while getting a request VC with PE KEVIN. They were in the council room, center of the 13 seats of the rounded table. It was dark and the only light source was PE KEVIN's hologram figure in the center of the donut shaped table

KEVIN: ...

Kevin: She's as sleep so

KEVIN: Do you approve Project: Stigma?

Kevin: I do not

KEVIN: Then we will either fight or try to stop it from happening. You only two options

Kevin: Thank you

KEVIN: Before that, please... do not follow my path... For I have become evil for humanity's sake and you should not

Kevin nod

Kevin: If you have time... Come to my place and I'll serve ramen...

KEVIN turned off the hologram.

Kosma: Did everything turned out well?

Kevin: Yeah...

An explosion then be heard

Kevin: I have to hurry. I'll put Griseo in her room and defend her, don't even try to go out, understood

Kosma: Yes

__________________

Arc City

Kevin was saving less and less lives by the time seeing other people died, he could only grit his teeth before going to another people. Just as he losing hope and stayed on the streets not really know what to do next, Someone jumped off. It was a valkyrie, A jacket that he bought for someone, star each sides of her thigh area. It was non other than Kiana Kaslana. She was helping someone, someone that called Kevin's heroic instinct who he tried to save yet almost loosing his mental energy to do so. She fought off the honkai beast like a true hero and killed all of them completely. He gulped after running towards another sound from afar pleading for help. Kiana's appearance sparked his heroic instinct and rushed to those that in needs

Few hours later

The "siblings" bumped into each other again, this time Kiana was trying kill herself. Kevin was a bit furious, he used Judgement of Shamash and shoot the gun that she held. She look at her side, it was Kevin looking down on her approaching...

Kiana: Kevin...

As he got near she heard him panting... or rather... crying. Kevin couldn't help but hug her tight as he gets close

Kevin: *Crying pant* ...

Kiana: Nii... nii

Kevin held her close before letting her go as honkai beast starts to appear

Kevin: I will kill.... I will annihilate... I will eradicate honkai... no matter... the cause...

Kevin then screamed with all his strength after seeing the honkai beast appraoching them both, panting heavily as he fought against the honkai that just summoned. All beast died of course to Kiana... he was rather becoming weak, Why though? he said that he's a bloodlust killer if something like this happens yet... he was weak and vulnerable than before. He was using his own energy rather than the ICHOR that boost his true strength

Kevin: We.... Kaslana... shall never yield, we shall protect, we shall fight against the false god...

Kevin gritted his teeth once more and charged at the honkai. He was protecting her, he values her than others. They will die of course and that as well make Kevin regret.

HoV: 'Ahhh look at that, you're hero... soon you will give up-'

Kevin: The KASLANA SHALL NEVER YIELD!

Kevin stared at Kiana in fury, he heard her

Kevin: If you get out off that shell I will make sure that I your suffering will be the same as babylon tower experiment... I WILL MAKE YOU SUFFER... YOU TRAITOR

He wasn't staring at Kiana, he was staring at Sirin

HoV: '?!?'

Kevin: Take her too and I will make sure that you will suffer over and over again

The glare that Kevin gave off, made Kiana as well shivers from fear. What were their relationship before

HoV: 'Oh so you're talking to me now?'

Kevin: You won't win... You won't win, you won't win, you won't win!

HoV: 'You've lost your mind, honey, You tried to kill me but I will win... I will kill everyone that she cares the most and yours too'

Kevin: You killed mom, You killed dad, You killed Major! and if Kiana will be killed because of you... I will... I will... going to make you feel that you're back in hell. I will give you your final warning, I will force myself through that body of her and make your life hell again

Kevin said as his eyes slowly turning amber, Kiana as well notice it. Could it be he's a herrscher as well, that's what Kiana's mind right now. And yes he is

HoV: '?!'

It shivered the herrscher inside Kiana she felt the power of the 14th herrscher in him. His eyes no longer sparkling eyes whose gotten berserk each time he sees honkai. It scared the herrscher even more. it didn't talk back

Kiana stared into Kevin's eyes, There was no longer sparkle in it, it was just an empty shallow void, a miserable void, reminding him of his own failures. He has been through worse than Kiana felt. Kevin realizes that she was staring at his eyes, he left with a miserable look. 

Kiana: Nii... nii...

Fu hua: 'I've seen those eyes before... the eyes of despair and hopelessness... But right now. you need to flee Kiana'

Recollecting to Kevin's words, the Kaslana oath. She took it as a motivation to move forward before fleeing. Kevin still kept saving people as much as possible yet failed to save most of them. 

Coming back home, 2 in the morning. No one was there to welcome him, he went and checked the two, they were safe at least. It tinted a bit of happiness but not enough to get him back to how he used to. he went to his room. His burden couldn't make him sleep. He cried again after talking to her like it... It hurt him mentally, deep down... he still care for Sirin even though she took the people who cared for him

It was hopeless he could only cry himself to sleep of full regrets.
_____________________

Next day

Kevin: Another day, huh

Kevin said in hopeless tone. He left his room and welcomed by good smelling food.

Griseo: Papa Kevin, come sit next to me

Kosma: Ah dad, good morning I've prepared breakfast so you don't have to. How was yesterday?

Kevin: It was great

Kosma immediately cipher what he meant. It didn't go well. a lot of people still died in the city. He frowned but quickly hid it. He served the food to the table, they thanked the food first before digging in. Kevin tasting the food as happiness tinted into him yet it was so much like; Euphoric or joy but it was a tint that will quickly fade in few hours. His heart has became so shallow to entrap happiness into his mind. 

_______________________________

Few weeks had passed. He's currently on a mission on himself. To find Dr Mobius, Heliopolis intel has revealed that she's visiting the lab for inspirations for her lab experiments. 

Finding her in a lab tube where zombies are mostly under develop

Kevin: Quite the magnificent bioweapon stored here

Mobius: And you are?

(https://thelostcity272.lofter.com/post/1f43a25b_1cd27d8b8)

Kevin: Kevin Kaslana

Mobius: You're expressionless as they say... and sad. What happen?

Kevin: None of that matters to you. I would like you to join me if you like

Mobius: For what exactly?

Kevin: Recreating a dead heroes' titles named "Flame Chasers"

Mobius: So you're just like me, Fan boying like I used to over that... I already gave up

Kevin: Su, Mobius, Annoying Elf, Eden and Sakura are already in

Mobius: How come they are alive?

Kevin: Well this is the current era, am I right?

Mobius: But how did you find them?

Kevin: Su is my best friend, Hua is still alive from PE's destruction same for Kevin and with that I became the Sire of World Serpent, I run it on KEVIN's behalf if he's busy

Mobius: But he was trapped in the Sea of Quanta, how come is that possible

Kevin: It is possible, the time in Sea of Quanta and the real world are distorted. He came out early than expected

Mobius: Do you even have proof of that, the flame chaser thing?

Kevin frown when he took his phone out, Regularly his phone had already destroyed but his pictures are always saved in cloud storage and with his new phone he took those Pictures. He took out a picture with Eden, Kevin, Elysia and Su on a cafe and with a blonde man smiling like a golden retriever

Mobius: It doesn't seems cosplay, same body fat and facial structure. I guess you've passed but why should I join you?

Kevin: Bio weapons

Mobius smirked

Mobius: Well then, I'm in. Tell me your address then I'll start moving in. My niece and nephew is still here and I need to find them. And here let's exchange contact numbers

They both did and Kevin gave her a card then a nod as he left]

Kevin: 3 left... Just an inventor and a stray cat... Then I'll plan out for Sakura for Kalpas... There's still people needs me so I'll stay for a bit while. 

Mobius: Oh... how considerate of him...
___________________

10 hours later - midnight

In the corners of city, the deal between hyperion and world serpent has been established, Kevin was wearing a hoodied version of his battlesuit with a black mask as he overlook into Theresa and the Squad V. He saw humanoid figure with a cat on her side jumping swiftly into the roofs, there's no noise sounded through it. Kevin did the same he followed the cat and person who is stalking the Theresa with the Squad V

???: Hmm... nothing is really valuable here except for the Divine key behind that child also that robot behind the other child

Kevin: The white haired child isn't a child but a grandma, she's already in her late 40s

Pardofelis: Since when did you learn to talk, Can-chan

Can: Meow?

Pardofelis: Wait?!

Pardofelis look at her side and tried to escape

Kevin: I'm same as you... so calm down

Pardofelis: Oh... Wait you reminds me of someone

Kevin: Who might that be?

Pardofelis: Kevin Kaslana, the world's greatest warrior!

Kevin frowned

Kevin: I see

Pardofelis: Why sad though? Do you hate compliments?

Kevin: No, It's that I don't live up to that expectations no more

Pardofelis: Why?

Kevin: Personal matters

Pardofelis: Ohh... So why are you here?

Kevin: To recruit you

Pardofelis: For what?

Kevin: For your professions

Pardofelis: And what do I get out off it?

Kevin: Money

Pardofelis: Hmm, It depends really how much you pay

Kevin: $10k per mon-

Pardofelis: I'm in

Kevin: Good.

Pardofelis: Oh- snake's assistant is destroyed

Kevin: You know Mobius?

Pardofelis: Yeah she's scary and she's performed an experiment into me and luckily it was successful

Kevin: What was the experiment

Pardofelis: I think me having cat appearances with cool combat abilities but I'm not good at it. So I kept myself in this profession, I hardly use my abilities and also if I gotten to a fight Can-chan will always be there for me!

Kevin: I see

Pardofelis: Anyways I'm in.

Kevin: Thank you, I should go for now and here's the address, you can move here if you'd like

Kevin handed a business card but it's a home address. 

Pardofelis: Will do boss! I don't really have a home so this is great

Kevin: Honored to have you

Kevin left

Pardofelis: Honored? That's a first time... We'll leave it at that

Pardofelis left a sweet smirk
_______________________

The next day, After Kevin waking up from his cried sleep. He heard a ring on the bell he of course washed his face and went to the front door. He opens it and it was Mobius with an ELF that looked exactly like Klein and Gray Serpent

???: ...

Gray Serpent: Good morning, Sire Kevin

Kevin was a bit shock, maybe he is indeed her assistant

Mobius: Early on in the morning you already look so sad just like the last time we met... What? Did your girlfriend broke up with you?

Kevin: No... rather I stayed away

Mobius: Oh... why so? anyways may I come in? I want to change now

Kevin: Sure

Kevin let them all in

Kevin: I haven't cooked yet... I will cook for bit

Mobius: Sure, I'm a bit hungry

Gray Serpent: I apologize sire, I cannot serve you for momentary

Kevin: It's okay

???: Excuse us

Mobius: Klein... would you mind help us?

Klein: Yes, Dr Mobius

Kevin: *sigh* It's Klein... I need to visit the realm again... They should be waking up

Kevin went to the kitchen and started cooking for them.

Timeskip

Griseo: Papa Kevin, what are you making?

Kevin: Ochazuke, It's something someone I loved made and taught me

Griseo: I have a mom?

Kevin: If she's here then that would be yes

Kevin sigh after it

Griseo: Did she love you back?

Kevin: Yes...

Kosma: Morning dad

Kevin nod

Kevin: Is your school still cancelled?

Kosma: Yes

Kevin: thought so, Keep yourself here inside okay? If you want to do something, do it in day time. But you need to call me so that I can take care of the things and the potential threats

Kosma: Thank you... dad

Kevin tinted another happiness on his shallow mind.

Kevin: This is what a father felt like... It's great

Kosma and Griseo smiled
_________________________

Mobius: And that should be done... Kevin! Is Breakfast ready!

Griseo/Kosma: Aunt?!

Mobius: Wait?! Wha... You two! What are you doing here

Kevin: I'm their foster father, Their parents died and you should know about that

Mobius frowned

Mobius: I know about that...

Kevin: Anyways come, the breakfast is ready

Griseo: I want Aunt to sit next to me

Kosma glared at her, Kevin knows why. She's a twisted doctor.

Mobius: Well then

After Breakfast, Front balcony

Mobius: The Breakfast was great, Never know that a Kaslana could cook

Mobius smirked

Kevin: Indeed, Kiana's cook was terrible for everyone however it was great for me

Mobius: 2nd herrscher vessel

Kevin: Yeah...

Mobius: What are you going to do with your sister?

Kevin: Threaten the herrscher inside her

Mobius: You can't do that

Kevin: I did... we stumbled upon few days ago... I heard her herrscher ego's voice... I don't know how

Despite being a herrscher himself... He completely forgotten his own recollection of achieving the herrscher cores with an exceptional... Core of Alpha and Omega. He... missed her despite being annoying. The core alone held great power yet... he doesn't know how to use himself... He would always think of the people in needs rather than how he handle it. He could use that power to eliminate honkai but couldn't, tried to save the people but couldn't because the lives in front of him matters more. 

Mobius: I see... I'll set an experiment and I need for that... We'll be doing that at heliopolis. Just a telepathic experiment is all and we also need that nun for that. Just be ready whenever you can,  kay?

Kevin: Understood
_______________________

Few hours later

Mobius, Klein and Gray Serpent went ack to heliopolis for work. And now The current Flame chasers and Pardo feeling uncomfortable

Pardofelis: Boss!

Pardofelis knocked

Kevin went to the door. And opening it he saw Theresa, Mei, Bronya and the current flame chasers except Mobius with Pardo on front crew is in front of him. He frowned a bit

Pardofelis: Boss... they make me-

Kevin closed the door then open it back. 

Pardofelis: Gha?!

Kevin: I have nothing to serve you all but come in. 

They all come in. Kevin went to the kids as Kosma is playing his game and Griseo painting, He went to Griseo's studio and tried to recollect himself together there

Griseo: Papa Kevin... is something wrong?

Kosma then suddenly barge in

Kosma: Dad! There's people!

Kevin: I feel you.

Kevin said as he sigh.

Griseo: There's people? Let's meet them

Kevin look at Griseo and offered his hands, Griseo was excited and Kosma was terrified. Griseo and Kevin walked like a daughter and father 

Theresa: To think that you're dead... you're just here and who's that girl I might ask

Griseo: Papa Kevin, can I play with her?

"Papa?!"

Mei, Su, Elysia, Theresa screamed.