The late arrival of our three main protagonists have finally came in the show as all the remaining Demon Company and Mika began to fight against the peculiar arrows floating in mid-air with all their might.

"The Black Demon boy under Guren came, huh?" Kureto hummed.

Then his eyes landed on the familiar kid beside the boy. 'Even the girl partner of Guren came...'

"Do it!" Aoi yelled as the peculiar lines began to attack them simultaneously.

Shiro stared at the container that seems to be an Pandora's box, there were lots of cursed signs around it and seems like a lot of danger. Suddenly, a huge sound echoed in her head.

"It hurts...I want to die...kill me...!"

She held her forehead as the voice seems like to be in pain and in great depression. 'Who is this...speaking?'

Then out of the blue, an the enemies aircraft appeared as the vampires cane out to attack the human beings.

"All units, move! Kill all the humans!" the vampire noble commanded as its troops began to attack the humans nearby them.

"We're going to extinguish the vampires, right here, right now! Open our way to the future!" Kureto yelled.

"Damn...what should we do?" Yuu says then someone tapped his shoulder.

"Don't panic. This is a great opportunity!" Shinya says.

"Right, we're not the targets anymore. During this confusion, we can—" Mika was cut off when someone spoke once again.

"You kids go ahead and run, the adults got your back!" Goshi says.

They've begun to clear out the path as Yuu reached to the point that he saw Guren alive and kicking.

"You were all right, Guren!" he happily says before running up to him.

What he didn't noticed that this wasn't the Guren he knew, it was the different personality that he possess.

"Hey, Yuu. Glad to see you're okay." he unscathed his blade and raised it up to attack him, Yuu was off-guard by this sudden change of happenings.

The sound of ripping of fabric and flesh pierced the air as the blow that was supposed to be for Yuu was transferred to someone else, blood dripped on the floor.

"Are you okay, Yuu?" Shiro asked as she evaded Guren's attacks.

"Shiro!" he exclaimed.

Then they started attacking each other while Shiro kept dodging and blocking his attacks smoothly.

"Why won't you try and attack me, Shiro?" Guren says while thrusting his blade at her many times.

"I-I can't do that!" she says while breaking a sweat from dodging.

"Oh, softy aren't we?" Guren kicked her right at the stomach as she was sent flying backwards.

Yuu caught her just in time, "You okay?" he asked as she nodded.

'That hurts a lot...' she thought while looking at her right wrist that was stabbed by Guren's blade in order to stop his attacks.

"Let's do this, Guren!" Kureto yelled as the man nodded.

"Drink the blood of a human, a demon, and a progenitor." Guren says as his blade turned red.

"Hey, Guren! What's going on with you?! What are you doing?" Yuu yelled while helping Shiro stand up.

"The end of Seraph." he says.

Then Guren ran passed Yuu and Shiro as he began to kill both humans and vampires nearby. Slaughtering, cutting, beheading...you think of it. Anything to do with killing.

The corpse of the victims he killed was shot by the peculiar linings as it drunk its blood and was transported to the container.

Then the Pandora's box exploded to many pieces as the cursed has been lifted immensely. Weird noisy appeared on the girl's head as it suddenly became scary for her.

"It's coming, Aoi. Punishment from heaven for the humans breaking the taboo! Control that power!" Kureto yelled to his blonde assistance.

A ball of light appeared across the sky as it gleamed brightly that everyone watched it from the ground, then a huge wings appeared as the person inside the lightness formed to be a little kid from the laboratory.

"Quickly...Save me...it's cold here."

Strange voice became to captivate Shiro's head as she couldn't shake the feeling of being watched all this time.

"Don't go away...I'll be lonely if you did, so please...stay with me."

She couldn't seem to be accustomed to the voice that kept whispering in her head, she was terrified from time to time when it speaks.

"In the end, everyone leaves me."

She looked up and saw a human with wings attached to its back, it's like an angel, not a human. It's eyes showed the expression of pandemonium as it was locked down in heaven.

"My little sister...Mirai!" Kimizuki exclaimed as he was shocked.

Shiro's eyes widened when he said the name Mirai loudly, a cold sweat trickled down her forehead as the name itself triggered memories.

"That's right...how could I forget?"

A tear rolled down her eyes as she saw her face again, flashbacks started overflowing her head.

•≫Flashback≪•

There stand an little Shiro who was staring in front of the huge glass where a patient was being held at.

The patient had long brown hair and was very sick, she was caught in the Apocalypse despite being a young kid. She was suffering.

"What are you doing here?" a husky voice asked as she flinched and turned around to find an pink haired doctor.

"Yamada-sensei..." she spoke.

The man turned to look at where the little girl was staring at and found the lab rat from Kureto's experimental lab.

"That girl's name is Mirai. She is very sick so you better stay away in order not to get affected."

Shiro stared once again from the distance. "Why is she sick?"

"She was caught in the Apocalypse, well, either ways it doesn't concern you. So go now." he says.

"I want to help her..." she says.

Then she turned to the man in front of her and stared in his eyes. "I want to save her life!"

The man looked down as his bangs covered his eyes. "It's impossible."

"We need someone's DNA to match with her experiment...in that way, the chances of her being saved, will raise to leaps and bounds." he says.

"Then I will give you my DNA, will that be enough to save her?" she says with willingness to help.

Unknown to the innocent child, the doctor smirked inwardly.

"We'll also be needing to get blood samples for you so she can be salvaged...there are lots of preparations in saving someone's life. It's complicated." he says.

"I will provide what its needed. Just please...save her." she begged.

The man smiled. "Sure."

•••

Two days has passed since Shiro gave her DNA and blood samples to the girl, then a week later, Mirai awakes after receiving blood. 

"How are you feeling...?" Yamada asked the little girl laying on the hospital bed.

"I'm fine...but, how come my body was feeling this good now?" she asked while looking up to the man.

"That's because someone gave their blood for you to survive."

"Who?"

"A girl named Shiro..."

Afterwards, Mirai seek for this girl as she began thanking her many times for saving her.

"It's fine, really!" Shiro says while waving her hand.

"But...I have to do something for you, Shiro-san. I'll feel guilty if I didn't though." Mirai says.

"Then how about you promise me something?"

"Promise you what...?"

Shiro held both of her hands and smiled warmly to the sick girl.

"Promise me that you won't give up in life and keep living, no matter how much it gets tough."

"Yeah, I promise...!"

There the fragile girl from before, float in mid-air while there was wings attached on her back.

"Snap out of it, Mirai!"

To be Continued...