Hey everyone! This is BlueSkyBlue back again with another chapter of Learning with Shiota-sensei! As you all can read on the chapter title, this chapter is about one of the OCs, Otonashi Hayuka. Since you all are confused about the OCs I have in my fics, as stated in the review section in When Nagisa Goes MIA, I decided to write about them. At first I wanted to do Kiryuu Natsuka... but I have not gotten her permission to use her in the fic... heheh... So I decided to go to the annoying one, also known as Otonashi Hayuka. A heads up to you all, these OCs are all based on real life characters, not spin off characters from Kuroko no Basuke, though they do sound like they are the female counterparts of the Generation of Miracles...

Anyways, do enjoy reading this chapter!

Name: Otonashi Hayuka

Seat Number: 19

Birthdate: 19th January

Star Sign: Capricorn

Otonashi Hayuka is the youngest child in a family of three. She has an older brother and an older sister. The eldest, Otonashi Kyoji, is everything a woman would want. The looks, the brains... not to mention a successful career as a lawyer. Her sister, Otonashi Reisa, is also a successful person. She started working at the age of 21 as an accountant and is currently one of the lead managers in one of Japan's top accounting firms. Otonashi Hayuka also had another brother, though not known to her as he passed away before she was born.

Otonashi Hayuka is musically talented as she plays a variety of instruments. One of them being the most common, the piano. Other than that, she also plays the koto (Japanese zither), kokyu (Japanese violin) and the biwa (Japanese guitar).

Though musically talented, Otonashi Hayuka is not the smartest person in the academy. In fact, her marks are all average, with the exception of World History which she fails every term.

Shiota-sensei you are the cutest teacher I've ever met!

When Shiota Nagisa started out his career as a teacher, he never expected a student like Otonashi Hayuka.

His first impression of her was her appearance. She is the beauty of Class 3-5, with her ocean blue eyes and long blonde hair that is often in a braided ponytail. She would have been taken advantage of many times if it weren't for her best friends that seem be everywhere she is. You can never see Otonashi Hayuka without any one of her friends. They stick to her like glue.

Nagisa glanced around the class, hoping to find at least the sanest one of the students in it. His eyes fell on a girl sitting at the back row, she was lying on her table while doodling on a book. He walked over to her and tapped her on the shoulder.

"Excuse me," he said. "Can you answer a few questions?"

She stopped writing, closing her book as she did so. He spotted the words "Hayuka's Book of Randomness" scrawled on the cover before she slipped it under her desk.

Then she looked at him.

He was taken away by her beauty. However, it really could not compare to Kanzaki's appearance. For a girl her age though, this girl is a gem.

Then she squealed.

"OH MY GOD! YOU LOOK LIKE KUROKO TETSUYA FROM KUROKO NO BASUKE!"

Turns out that Otonashi Hayuka is an otaku, reminding Nagisa a lot of Fuwa. In fact, her whole group of friends are otakus, just that they do not make it as obvious as she does.

She was not violent in nature, unlike the majority of her classmates. However, one can say that she has a few loose screws in her head.

For one, she has the most ridiculous ideas when she was writing her essays. There were times where Nagisa has to go through 10 pages of paper that tells the story of a guy finding a chicken that leads him to a member of the Avengers, who turned out to be an alien in disguise.

Nagisa's eye twitched as he read one of the essays handed in to him. He took a look at the name at the front page.

Otonashi Hayuka.

Then he took a look back at the paragraph he was reading,

"There's not enough mayonnaise." Hijikata growled to himself as his tummy rumbled. "I need more mayonnaise." On the shelf, there were jars of peanut butter, jam, chocolate paste... anything one can think of but one lone jar of mayonnaise sat all alone in the corner of the shelf. When Hijikata opened the jar, there was barely even a scoop left for him. Hijikata huffed, pissed at his dilemma. THERE IS NOT ENOUGH MAYONNAISE!.!.!

Nagisa sighed.

At the bottom of the page, he wrote down Fuwa's name and contact number with a small note.

"Talk to this person for your fanfiction inspirations. However, my class is not the time for you to write your Gintama fanfictions."

Hayuka-chan is not one to speak with her fists, Nagisa observed. Most of the time, she just stands by the sidelines, oblivious to whatever violence that was happening around her while just busy writing everything down in her Book of Randomness. Meanwhile, her friends will be 'eliminating' all the boys who creep up to the blonde with lustful looks on their faces.

"Ne ne, Shiota-sensei!"

"What is it, Hayuka-chan?"

"Did you know that the sky is blue?"

With this girl in his class, Nagisa began to think that it is a miracle that no one's IQ had dropped. This girl is a bright girl, but she has the habit to state the obvious to anyone who would listen to her (which is literally everyone).

"Every living being has a bone called the coccyx. For animals like the cats and the dogs, the coccyges are the bones in the tail. Monkeys have extreme use for their coccyges and the muscles in their tails so they can swing from tree to tree easily. Many scientists speculate that we humans are the evolution of monkeys. With each evolution, our coccyges grow shorter and shorter to make up for the expanding size of our brain. That is why the structure of the human coccyx is very short, unlike many other animals that have long tails," Nagisa explained the structure of the skeletal system to his class. "Do any of you have any questions?"

"Sensei!" Hayuka raised her hand.

"Yes, Hayuka-chan?" Nagisa asked.

"If that is so, would that explain why *Okumura Rin is so stupid? He is a human with a tail!"

Nagisa sighed.

That girl is spouting off about her anime again.

Once, Nagisa had caught Hayuka talking to herself. At first, he dismissed it as his imagination and that a stressed day at work is causing him to have hallucinations.

Then he noticed Hayuka setting aside a small part of her bento whenever she is eats. It was like she sets it aside for someone else to eat, though there was no one else beside her. The food will always be gone when she keeps the empty container, due to her friend sneaking it away when unnoticed.

"Hayuka pretends that she has an older brother," one of Hayuka's friends, Kiryuu Natsuka, commented when asked. "Not Kyoji-san, but a brother who is two years older than her. I suppose she is quite lonely at home due to her siblings absence as they are always working. I think she is not aware of it, but she had another brother once. However; he passed away only a month after he was born."

"How do you know this?" Nagisa had asked after that, and he remembered the reply he had gotten.

"I do my research," Natsuka answered with a casual shrug. "And her parents had warned me about it after I questioned her sanity when I first witnessed her basketball while shouting random 'Pass!' and 'You are doing a great job!' to no one. Otonashi Ryuusuke would be his name, and he would be two years older than us if he were alive. I guess Hayuka unconsciously knows that she had another older brother, as she always refers to the imaginary brother as 'Ryuu-nii-san'."

Nagisa always wondered why a bright and cheerful person like Otonashi Hayuka has such a lonely life at home.

Nagisa closed his notebook with a sigh. He had finished with the notes he had on the profile of one his students. He checked his watch for the time. It was almost time for homeroom, so he packed his things and left the office to walk to his class.

The class was half filled with students by the time he reached. Some were chatting to each other while others just say sat and studied.

"Ne ne, Mikasa-chan, Peach Girl live action is coming out soon!.!.! I'm so excited about it!"

"Live actions aren't even that good. I don't even understand why you even watch them."

"Don't you know? Inoo Kei from Hey! Say Jump! is gonna be one of the actors in it!"

"Ah... You and and your Hey! Say Jump! again... Be normal and listen to K-pop. Like EXO, for example."

"...Mikasa is a meanie."

That's the otaku gang right there... Nagisa mentally ticked the students off the list for roll call later in the day.

"Hey Jin, beaten up anyone lately?"

"Nope, not in a few days actually... Wanna join me for a hunt later?"

"In the usual place?"

And those the class gangsters... Nagisa mused to himself as he made a note to follow them after school. He did not want his students to go making trouble out in the alleys. That, and he does not like parents coming to him with their complaints.

"OH!.!.! That was close though! Comon', let's try again!"

"Right, it's my turn to flip it this time..."

Those people are the "wanna-be-trendy" students. Nagisa shook his head exasperatedly. If those people listened in class when he taught them Science a.k.a the laws of physics also a.k.a. gravity, they would have mastered the bottle flipping tactics.

"Shiota-sensei?"

At the mention of his name, he looked up. "Oh, what is it that you need, Hayuka-chan?"

The blonde haired girl laid out her Mathematics book in front of him.

"My tuition teacher is teaching me these pre-Algebra stuff but I am doing something wrong... I think."

Nagisa took a look at the page. "Ah, it's Exponents. What do you not understand about it?"

"Yea, the rule makes me multiply things that I have already multiplied. Or haven't multiplied yet. I forgot, but I checked the answers and mine are all wrong," the blonde girl scratched her head.

Nagisa stared at the worksheet. "Okay... You asked your tuition teacher about this, so how did he explain it?"

Hayuka pointed at the side of the worksheet where she scribbled some stuff down. "Yep! He said to multiply the big numbers, but add the small one. But what qualifies as a small number? Anything five or under? But when you are rounding hings up, five is considered one of the higher ones. I wasn't sure about that one so I only did the one over or under five."

Nagisa blinked, confused.

Then realization dawned on him when he looked down on the notes Hayuka had scribbled down.

"Hayuka-chan... these are the small numbers, the one floating right above the bigger sized ones," he put an emphasis by circling the exponents and tapping on them.

The girl's eyes widened. "Oh! I did not realize that! Everything makes so much sense now! Thank you, Shiota-sensei! You are really the smartest teacher on the planet!"

Nagisa smiled and motioned the girl to sit down.

Otonashi Hayuka is one interesting girl.

Reason why Otonashi Hayuka is in the 3-5 class:

Due to the many guys hitting her and her oblivious to their lustful stares, her group of friends do their best to keep the guys away from her. This caused the school authorities to assume that Hayuka is the leader of a gang who commands her "lackeys" to beat up whoever who pisses her off.

It's kinda stupid if you ask me.

That's it for Studying Otonashi Hayuka! I hoped you all enjoyed it! Reminder, all OCs in this fic are based on real life people! Do look forward to the next update, whether it will be either When Nagisa Goes MIA or this one! I will also be writing about the other OCs, and also other little oneshots of Nagisa with his students. Till then, ja~!

Yours,

BlueSkyBlue,

a.k.a. Otonashi Hayuka