After school, me, Nora and Yukimura walked together to D Class, Mikazuchi-sensei's homeroom class.

Nora had prepared for this, carrying notebooks, highlighters and folders with him, while Yukimura was the complete opposite, equipped with nothing but a pen in his pocket.

"Excuse the intrusion."

Yukimura nonchalantly knocked on the door and opened it with a cocky grin. Well, one thing was for sure, D Class's classroom smelled better than ours.

Immediately, Satou Ishigami got in our way. He's like Zyriot's best friend, or something. He's a weirdo... his hair covers one of his eyes and he has headphones on him all the time.

"Yukimura. What's your business with D Class?" Satou asked.

"Huh? Get out of my way, I need to see Mikazuchi-sensei for help with this... thing."

"You? Studying?" Satou turned around and shouted to the class, "Guys, it's the end of the world, the defects want to learn!"

Immediately, the remaining people in D Class began giggling. I couldn't see Zyriot here, so it's not like he could calm them down.

That was one of Zyriot's great features as a leader. His class had tremendous respect for him, so they heeded to his commands.

I wish I could exert the same power over E Class. It would make controlling them a lot easier. Maybe we'd even overtake D Class quicker if they'd all listen to me.

"You want to try your luck, bastard?! I'll kill you!"

Yukimura snatched Satou's shirt and pulled him closer to his balled up fist.

"Yukimura-kun, stop!"

I grabbed his arm and he let go of Satou immediately.

"C'mon, let's not act so hostile."

Yukimura rubbed the gap between his eyes and groaned, heeding my words.

"Oh, Sakigamiya-san, I didn't see you. Hey."

Satou grew a little smirk seeing me.

"You suck off guys like him now? First it was Matsushita, now it's Yukimura, huh?"

Shigeru Zenkichi joined Satou at the doorway, and began to target me next.

Of course, these were cheap tactics that wouldn't shake my heart. I refused to let them belittle me.

"How much did he pay you? Does he even have money? What a desperate slut!"

Terasaka Soichiro insulted at us from the back of the room, laughing as his feet were kicked up on their tables.

I was jealous that they had proper desks, rather than the chabudai we had to use.

"Who's next? The little trap hiding behind you?"

Satou continued the chain of slurs at us.

Nora backed away, hiding behind Yukimura. Honestly, I found it insulting that they'd try and weaponise Nora's innate cuteness against him, especially since me, Ria and Kou worked hard to give him that makeover.

At that point, they weren't just insulting him. They were also insulting me too.

"Nah man, threesome, threesome!" Shigeru said.

"Sakigamiya's gonna get trap d*ck shoved up her p*ssy while Yukimura gets his sloppy seconds!" Terasaka said.

It was infuriating that they were laughing at us so casually. Yukimura had enough of their nonsense and punched the wall next to D Class. Their laughter heightened seeing him angry.

"Shut up! Stop insulting my friends you pieces of shit!"

"At least we're not in E Class. Where's your tie? You need to show everyone how pathetic you are."

Satou made fun out of Yukimura's crooked uniform with a condescending smirk.

"Bastard!"

Yukimura swung his fist, and Satou staggered back as the real threat of violence was used against him.

Suddenly, cutting in between them was a white haired man with piercing red eyes. His forearm took the impact of Yukimura's powerful swing.

Satou backed off, his face becoming grim as he saw who blocked Yukimura's powerful punch.

"Phew, looks like I made it in time."

Mikazuchi-sensei turned to us and smiled. Their homeroom teacher had intervened.

Shigeru and Terasaka stopped laughing. They looked at each other and decided to barge past us, leaving the class. Satou followed them, giving me a dirty look.

Idiots. Dirty idiots. All of these D Class students are worthless. They deserved to be in E Class. Not me.

The rest of D Class moved out, following them. People like Takenaka Mikitaka, Imaishi Reo, and all the other stupid delinquents. On his way out, Takenaka knocked the folders out of Nora's hands, causing everything he held to spill onto the floor.

They began laughing as Nora scavenged the floor for his belongings. I knelt down and helped him. I felt bad for Nora, as they pick on him constantly.

How can Zyriot lead a bunch of nonsensical people like them? What does he use? Manipulation? Violence? Fear? I don't understand how they'd kowtow to him.

"I got your email Nora-san. Thanks for alerting me."

Mikazuchi-sensei smiled, popping his shirt's buttons.

"You guys okay?"

Nora nodded. Yukimura didn't bother responding, so I did instead.

"Mostly, yes. Yukimura-kun's justifiably angry though."

He was red in the face and looked like he'd explode any minute now. Nora just stayed behind him with a scared expression.

"Damn it, Mikazuchi-sensei, why didn't you let me hit him?! He was insulting these two!"

Yukimura released his pent-up anger by complaining.

"Violence is never the answer. Come in, your remedial lessons start today."

"How can you be a homeroom teacher to such dumb pieces of... garbage?!"

Yukimura tried to express his rage in a way a teacher would find acceptable.

"They're not bad people."

"They were slut shaming Sakigamiya-san, calling Nora a trap, and making fun out of me! How are they not bad people?!"

We took whichever seats we wanted in the classroom as Mikazuchi-sensei set up his board. Nora chose to sat at the front, while Yukimura loitered at the back. I decided to sit in the middle, but near the back and next to a window.

Upon closer inspection, the table and chairs they had were also bad quality ones. It was still an upgrade over the old desks we used to have, before we lost the war and got penalised by 3rd Year A Class.

Besides that, the room had functional lights and blinds, but seemed like it had a broken heater/cooling system. There was also a lot of rubbish on the floor, probably from the students, and some graffiti on the walls. At least they get lockers in the back of their room.

"You guys were learning about the menstrual cycle, right?" Mikazuchi-sensei asked while looking through his laptop.

"Yes, we want to learn about the second half now." I said.

"Perfect, I can teach you that!"

Mikazuchi-sensei grinned and pulled out his stylus. He got up from his desk, and began writing on the whiteboard while talking to us.

It was time to tune-in, and focus. Even if he's a jokester teacher, he knows more than me. I need to take that knowledge and become smarter than everyone else.

I won't lose to A Class. I'll surpass all of them and become King of this wretched school. Then, when I graduate, I'll go on to become a successful doctor, and make so much money, in the future, the unsuccessful students will be begging me for money.

That's just how much I'm worth.

"Let's talk about hormonal methods of contraception. Yukimura-san, what's contraception?"

"Something... to prevent pregnancy?"

Yukimura scratched his head. Despite being a testosterone-driven pervert, he was clueless about actual sex.

"Yep, very good. We'll first explore oral contraceptives. Now, since human fertility is controlled by hormones, we can also control fertility using hormonal forms of contraception. The oral contraceptive we're talking about is most commonly known as the pill."

I know about the pill. The girls learnt about it in sex education class in middle school. Not sure what boys learnt. Probably condoms.

"The pill is taken by girls, so you don't have to take it, Yukimura-san, Nora-san. It contains oestrogen or progesterone, or even a combination of both. These inhibit the production of FSH, which means?"

"The ovum inside the follicle cannot mature."

Being a girl, this topic was easy for me. It was essential for me to know how these sorts of protection works.

"Very good! There's one caveat though. Oestrogen at low levels stimulates the release of eggs. But at a high level, oestrogen will inhibit the FSH. Now, this is the important bit as to why the pill works so effectively. After taking the pill for awhile, egg development and release will stop completely. If there's no egg available, there can be no baby. So you guys can have sex to your heart's content!"

Yukimura smirked, thrusting his hips while chuckling.

"Like this, sensei?"

"Yeaaaah, Yukimura-san's got the right idea! Who's the lucky lady?"

"Dunno. Whoever it is, I hope they can handle my 10 inch d*ck!"

"Sakigamiya-san, please prepare your v*gina thoroughly with lube."

Mikazuchi-sensei clapped his hands together and prayed for me.

"Hang on, m-me?" I said with my ditzy voice.

I knew what was going on, but playing an airhead is more cuter. That's why I was sometimes jealous of Nora, since he's always cute without even trying.

"Yukimura-san wants to fuck a girl, and you're the only one here. I'd prepare yourself if I was you."

"Distasteful joke, sensei." I deadpanned.

"A ha ha, you're not wrong. I apologise, I apologise. Was merely a jest of the sexual variant."

Mikazuchi-sensei was a teacher that pushed the boundaries of how he interacted with students. His crude sense of humour meant that, if we did something inappropriate, he'd laugh and play along. It was both a blessing and a hindrance.

"Okay, fun and games are over! The benefit of the pill is that, if taken correctly, they are more than 99% effective and can reduce the risk of certain cancers. Isn't that great? However, there's some possible side effects. Like... changes in weight, mood, or blood pressure, due to the high levels of oestrogen. Don't worry though, modern pills contain much less oestrogen."

"What about contraceptive skin patches?" I asked. I heard those were popular.

"Contraceptive injections, implants and skin patches all fall under the same sort of deal. They contain a slow release of progesterone to inhibit the maturation and release of eggs. Now, let's move onto non-hormonal methods of contraception."

Mikazuchi-sensei began drawing six crude drawings on the board. Looks like a condom, diaphragm, a tube... needle? Calendar? Stop sign? Huh?

"As the name suggests, you can control fertility without hormones. We'll start with something everyone here knows from middle school sex-ed classes. This is a condom."

He labelled the condom drawing.

"It falls under the physical barrier methods. This diaphragm is also one of these physical barrier methods."

He then labelled the diaphragm drawing.

"You know how to use these, so I won't spend too much time dwelling on them, but you gotta know these prevent the sperm from reaching the egg. Yukimura-san, give me a benefit of using a condom."

"Uh... they're quick and easy to use?"

"That's true. What's a disadvantage of using them, Nora-san?"

"T-they can... tear or rip easily?"

"Perfect! Sakigamiya-san, this is for you. What's a disadvantage of diaphragms?"

"You need to put them in just before sex, and leave it several hours afterwards."

"Nice, you guys really do know your stuff. I'm a great teacher, aren't I?"

Not really, sex-ed is an easy thing to grasp.

"See this really bad drawing?"

He pointed at what I thought was a needle.

"It's called an intrauterine device, or an IUD. It's also known as a coil. Basically, these need to be fitted by a health professional and prevents the implantation of an embryo or release of a hormone. IUDs can remain in position for up to 10 years, but there is a small risk of causing an ectopic pregnancy."

"Ecto... what?" Yukimura repeated.

"Ectopic pregnancy is when the fertilised egg implants itself outside of the womb. This... unfortunately leads to... well, miscarriage. Don't worry, it's like a 1 in 90 chance for ectopic pregnancy."

"Those sounds like bad odds, sensei..." Nora said with a depressing tone.

"Hey, I'll talk more about it in another lesson. For now, let's turn our attention to this poorly drawn tube of spermicidal agents, or better known as spermicide!"

Mikazuchi-sensei labelled his drawing. I honestly thought it was toothpaste or something. Spermicide though, I've never heard of it before.

"Spermicide kills or disables the sperm. These can be added to other physical barriers, such as condoms, but some people have allergic reactions to this. Okay, next up is this. Abstaining!"

Yukimura let out a loud groan of displeasure. I mean, he looks like one of those guys who'd masturbate regularly, so I guess I can see why he hates the idea of it.

"I feel your pain Yukimura-san. Getting blue-balled feels worse than starving to death. However, in the context of this subject, you only have to abstain from intercourse, so you can fap to your d*ck's content in the meanwhile!"

Mikazuchi-sensei pointed at his calendar drawing.

"You just don't have sex when an egg may be in the oviduct, which is why I drew this calendar. It's important to know when to abstain, because while abstaining can be used successfully, if the timings are not accurate, the chance of pregnancy is high. You don't want that."

"Sensei, if I get a girlfriend I'd want to fuck her everyday."

Yukimura openly said his thoughts. He was an extremely honest person. I wasn't sure if that was a good or bad thing.

"My wife and I had sex for roughly three years straight without missing a night. Beat that record."

Mikazuchi-sensei bragged about his personal life with a smirk.

"Legend!"

Yukimura gave a thumbs up.

"The final one is the most extreme contraception. Once this occurs, you can never go back. I'm talking about surgical methods of male and female sterilisation. An example of this is a vasectomy, where the sperm ducts are cut and tied. This cannot be reversed and is considered permanent."

Mikazuchi-sensei pointed to the stop sign.

"This is meant to signalise sterilisation, not that you shouldn't do it. People have sterilisation for many reasons. If necessary, you can do it."

"But ejaculating feels good. Who'd want to deny themselves of that pleasure?"

"I've never had a student as bold as you, Yukimura-san."

Mikazuchi-sensei laughed at his response.

"Honestly, I dunno either. I just know it's an option. I agree though, busting a nut is like a drug. Not implying I did drugs. I did rub a card on my balls once. Story for another day."

"You can't just end it on that!"

"Alright, this is the final stretch. Reproductive technologies to treat infertility, using hormones."

Mikazuchi-sensei cleared the board and turned back to us.

"This is pretty interesting since it's very helpful to modern society. Assisted Reproductive Technology, also known as ART, is the use of hormones and products, such as fertility treatments, to help achieve pregnancy. These include in vitro fertilisation, and a fertility drug, clomifene."

I've heard of in vitro fertilisation, but not clomifene. Mikazuchi-sensei sat on his desk and began talking with a more sober tone. This must be a serious topic, huh?

"Some women... they have difficulty becoming pregnant, since they don't produce enough FSH to allow their eggs to mature. Some fertility drugs contain FSH and LH, which obviously stimulate the egg to mature in the ovary. Of course, fertility treatments increase a woman's chance of becoming pregnant, but the treatment may not always work. On the other hand, because the treatment boosts the production of mature eggs, it increases the chance of twins or triplets."

I hope I don't have to do anything like this. I want to have three children at least.

"Multiple pregnancies carry a risk of complications, and may lead to premature or underweight babies. So, this is where our ARTs come in. In vitro fertilisation treatment, also known as IVF, can be used if a couple are having difficulty conceiving a child. This could be because there are issues with the quality of the man's sperm, or a woman has blocked oviducts. Let's break it down into sections on the board."

Mikazuchi-sensei jumped off the desk and started to break it down.

"IVF involves giving a mother FSH and LH to stimulate the maturation of several eggs in the ovary. These eggs are collected from the mother and fertilised by sperm from the father in a dish in a laboratory. The fertilised eggs develop into embryos. At the stage they are tiny balls of cells, one or two embryos are inserted into the mother's uterus, or in other words, the womb. Not difficult, right?"

"So you just take eggs from the mom, add some sperm with the dad, wait for it to turn into embryos, stick 'em back in, and the mother gives birth to a baby?" Yukimura said.

"Yes, basically. The development of microscopy techniques have allowed IVF treatments to be developed further, which is really good for the whole of society."

"Science is insane."

Yukimura shook his head and made a mind blown expression with his hands.

"Now, let's look at clomifene. Some women have difficult becoming pregnant because they do not ovulate. Clomifene is a fertility drug used to stimulate ovulation, the release of eggs. It works by blocking the action of oestrogen's negative feedback on LH. Therefore, more LH is released in a surge. This mimics the LH surge that occurs just before ovulation. This means ovulation can occur. Then the sperm can go ahead and impregnate it. Happy days for everyone, right?"

"Yeah. I feel bad for the guys who do have to use these methods, though."

"You shouldn't, since these were developed to help people out. It's a good thing either way if people use it, or don't use it."

Mikazuchi-sensei began clearing the whiteboard.

"Alright, that's all for this lesson. Good job participating today!"

"Huh? Is that really it, sensei?"

Yukimura scratched his head.

"Yep, that's the end of this topic." I said.

"Seriously? Yahoo! I learnt about the menstrual cycle and contraception!"

Yukimura cheered, jumping out of his seat.

"T-this was a good lesson." Nora said.

"Now, before you all go, please write me a nice long story about how Sakigamiya-san wants to use one of these contraceptive methods when she will have sex with Yukimura-san, and explore the different types I listed. Make sure to include a scene where they talk to the doctor, Nora-san."

After announcing that horrible challenge, Mikazuchi-sensei walked over to the door and locked it.

"Good luck!"

I suddenly hate this teacher! He always pulls this sort of terrible stuff! Let me out, I wanna go home!