One year ago, Ichinose Academy's trainee program

(Trainee program: This is a two-month program for all students at Education college. Each of them will take one subject to teach and the teacher of that subject will be the one supervising and evaluating their performance, about their teaching methods, their confidence and so on. The rating by the end of the second month is important, as it will be counted with the score of the graduation test, to determine if they will get a degree or not.)

Mafuyu's POV

Just another ordinary and boring Monday, another day at work. Tired, want to sleep...

I believe this day will be the same as all time, just preparing lessons for the classes, collecting homework from students and scolding those who don't want to go to school for learning, and it just goes on. Nothing is special, as I guess, but this is still my job, anyway. Need to have my responsibility for it.

As always, I walk into the teachers' room, where things are just noisy like every day. Teachers are chatting about all things in the world that I don't even know if it's important to know or not, or maybe complaining about how low their salaries are and how easy they've run out. Seriously, can't you be as saving as me?

"Kirisu-sensei!" Oh, it's someone calling me. Hope it's not about substitution. "Yes?" I asked him back, tried to keep my cool.

"Do you know that today is the first day of trainee program?" He asked. Oh you mean the program which in the past, none of the trainees actually made out well and failed?

"... And what does that mean to me anyway? We haven't received any trainee for a long time." I asked him.

"Well, it's a surprise. This year, someone is actually attempting this program at our academy!" He excitedly said. Wow, someone is actually that foolish and innocent to attempt it.

"Indeed. Surprising. So what subject did he/she choose then?" I asked.

"He told us to pick whatever subject we want him to teach! Now that's daring!" The other teacher said. Ok what? I know he's too innocent to pick this academy, one of the top academy in this country, for his trainee program. But he allowed them to choose whatever they wanted? Is it too hot today that he's gone crazy?

"... So what did you pick for him then? And for what reason did you call me for, if you can answer?" I asked him back.

"After a long discussion, we think that this subject is a little bit short on teachers..."

"Okay..." I said while sipping my cup of coffee.

"So we decided to put a challenge for him to take..."

"Just cruel as always..."

"... and we picked World history." The teacher said. Okay now that's really surprising...!

"... And who is his supervisor, then?" I asked the teacher, and he just gave me a folder, with information of the trainee, his subject, his performance at college and some more additional stuffs...

Oh so I AM his challenge?!

"Furious! Incomprehensible! Why AM I a challenge?" I asked him furiously, but I also heard some giggles and chuckles behind my back from other teachers. "And don't you all have something to do instead?!" However, someone actually explains this to me, or if I can call this an 'explaination'.

"But we think you are the best choice, Kirisu-sensei. After all, we believe that you may know him, too." A female teacher said while covering her mouth, trying to hold her laughter. Yeah, laugh! I'll get you next time!

However, that 'knowing' part is confusing. With my stubborn and hard-to-get-close personality like me, who could be known for that 'knowing' thing? Takemoto-san? No, she's currently abroad. Ogata-san? But she's studying psychology. Furuhashi-san? She's not taking the path to be a teacher. That's all students I can think of, who know me well. Who could it be?

... Yuiga-kun?

No no, that can't be... After all, with someone like him, he probably will pick any other school for his trainee program than this academy. You studied at an academy, and you choose it to teach again, at the same place? That's just non-sense and hard to understand. Also, it's been so long since the last time I met him, when he graduated from this academy. There's no way he could return here...

Well I guess there's only one way to find out. I'll reach in this folder to find out-

*ring* *ring*

Oh, that's the school bell. My class is going to start soon! I've got to go now! Maybe I'll find out who it is when I reach the class!

So I'm quickly walking to my class, so I won't violate the school rules about 'running in the hallway'. I finally make it in time, but what's that cheering sound in the classroom? I look through the window and I see girls cheering, perhaps for someone handsome on the board. Are you making some kind of unprofessional fashion show? Even before my class? Ok then, this whole class will be punished!

"Hey! How dare you being noisy right in the early morning? And where is the class-" I walked in the class and shouted, when suddenly I saw someone on the board, not any amateur fashion model like I thought, but that was someone I knew, facing on the board to write today's lesson, while other students cheering on him behind. Wait, is that...

That boy... no, that young man turns to his right after hearing my scolding, and looking at his face, I soon notice who's that innocent and foolish individual I talked about is.

"Oh, you're late. Good morning, Kirisu-sensei!"

"... YUIGA-KUN?!"

O0O

Okay... Okay... Let's calm down and recall everything. What the hell? Why is Yuiga-kun teaching right now, and why is he wearing in such a formal way? He the trainee that those teachers have been talking about, right?

So while he is teaching, which is a pain to watch since he's starting to freak out and mess up the lesson, I guess I'm going to see what's inside this folder. So I open it and read the information about Yuiga-trainee-kun.

'Nariyuki Yuiga, 22 years old, one of the top students of Education college, currently on his fourth year. Subject attended for trainee program: World history...' Okay, so I don't know if he's clueless about this trainee program so he wasn't prepared for anything and any subject he was about to teach, or he's just simply stupid, because I can see he's messing up between Adolf Hitler and Joseph Stalin!

"Oh by the way, everyone, did anyone say hi to Kirisu-sensei?" Yuiga-kun asked in the middle of his lesson. First of all, why did you interrupt the lesson for a pointless reason? And secondly, it took you 20 minutes to remember that I've been sitting behind this class? Okay, whatever, you want to be this class' top teacher? Then behold, you will be impressed by how they respect me!

"... good morning... Kirisu-sensei..." Wow now that's certainly impressive. What the heck is that weak tone, you ungrateful student?

Okay Mafuyu, just relax... It's not like he's going to mess up his first class for his trainee program, right?

"Okay, back to the lesson. In 1929, Hitler became the Prime Minister of Nazi Germany- I mean 1933! Sorry, class!" Why am I having a bad feeling about this? Did he just speed up the whole Germany history?

"With his desire to take over just Europe- I mean the whole world in his hand, Hitler ignited World War II in 1940." It was 1939, you idiot! Have you even read about today's lesson?! Have you even prepared anything?!

"Yuiga-sensei, Yuiga-sensei! I have a question to ask!" Don't ask him!

"Yes, Hana-chan? What would you want to know?" Yuiga-kun asked nicely, but it's certainly not bringing any nice or good feeling for me.

"... ARE YOU STILL SINGLE?" Hana-chan finally spoke up, which made me facepalm myself and hope for a way to escape from this world. What kind of question is that? Don't you dare answer her, Yuiga!

After a short while from the question, he turns his sight away from the student, perhaps he really wants to put it aside and move on, thanks god. However, he then grabs a ruler, uses his mouth to hold it, then strikes an elegant pose with his hand slightly pushes the blackboard. Suddenly, the wind outside blows into the classroom, blowing his hair slightly, combining with the warm sunshine of early morning, making this probably the cringiest scene I've ever seen, if that's even a word to describe.

"I'm Nariyuki Yuiga... single..." And there he is, said it in a gentleman's tone, created a loud fangirling sound from the back. I was right. This is such a pain to watch!

Then he turns back to the class to notice the dark aura and the glare coming from me. I don't know why he's sweating, but I guess he will finally stay focus on the lesson after this. But all and all, there is one thing that I'll most certainly do when this class is over...

I'll get him for this!

But first, I walk to Hana-chan desk and tap her back. When she turns around, I give her a warm smile, which I rarely do, then simply slam some papers on her desk, reminding her and the whole class that I'm still here. "Write today's lesson 20 times in these sheets of papers as a punishment! Give me tomorrow or you'll get a low score for your next quiz!" I scolded her and noticed the class was also sweating, including Yuiga, who is struggling to stand still. That's right! Keep sweating!

And as for you, Nariyuki Yuiga... See you after this class!

O0O

"Alright class, make sure to read the lesson again at home. I'll be checking it the next class, understood?" After all the painful time I've suffered, the class is finally over. So the students stand up, thank Yuiga-kun for his teaching, although this might be the last time he'll get to hear this, and Yuiga-kun takes his leave, with me follows behind. When he is walking, he glances back and realizes I'm slowly approaching him for his sin, so his walk turns into a dash and runs away. But thanks to years of training and being a figure skater, my speed is fast enough to chase him down, corner him into a wall and strike the biggest Kabedon history has ever seen.

After 4 years not seeing him, I have to say he's much taller than I am, and perhaps look stronger, too. People will probably refer him as Yuiga-san rather than Yuiga-kun. But that doesn't matter because now he's shrinking into Yuiga-kun in my Kabedon, sweating like a waterfall. Geez, am I actually that terrified.

Seeing him like that doesn't make me feel good, so I give him a small but warm smile, with my head slightly tilts to a side, signaling him everything will be fine. However, he is so scared that he collapses to his knees and starts begging for mercy.

"I'M SORRY! I HAD A HORRIBLE TEACHING, I KNOW! PLEASE DON'T SEND ME TO HELL!" Yuiga-kun shouted with teary eyes, enough for all the teachers in the hallway noticed. As I don't want to bring any trouble with me, I grab his hair, pull him up like Thanos grabbing Iron-man's head. When his face finally encounters mine, I slightly lift up my face, enough for him to see just one eye, the one spreading out the darkest aura, and I grit my teeth, showing him my anger, while breathing out smoke from my nose.

"YOU, ME, MY OFFICE, NOW!"

O0O

Writer's POV

For having a good relationship with the principal, and also for her good teaching, Mafuyu was given her own office, so she could work in a peace and quiet place as she wants, away from the noisiness and disturbing sound from the teachers' room. To her, this room is also the place she can meet students privately, about their lessons or if they have any trouble in choosing future paths.

And now, with trainee Nariyuki Yuiga at the academy, she's turning her room into a torture chamber. Thanks to the peace and quiet atmosphere, this has turned into an effective punishment.

"IRRESPONSIBLE! STUPID! UNRELIABLE! What you did is a sin to any teacher out there! Consider this a punishment, Nariyuki Yuiga!" She is scolding Nariyuki, who is having stacks of cements on his knees, with two buckets of water each on his left and right arm.

For Nariyuki, he's having a tough time of his life. He attempted the trainee program at Ichinose Academy because he wants to go somewhere near his house, but he didn't expect that he had to choose a subject he wanted to teach. And now he's cursing the teachers for picking world history for him, choosing Mafuyu Kirisu as his supervisor.

To him, he expected something different, a brighter story. He expected Mafuyu would miss him and go 'Kyah! There you are, Yuiga-kun! Hug me!' after 4 years. But after all, reality is always painful and tough.

"Are you even listening to me, Yuiga-kun?" Mafuyu asked and brought him back to real life, from his land of thoughts. "Y-YES, MASTER! I MEAN SENSEI!" Nariyuki spoke up, but his voice was a bit shaky since he was having kilograms of cements on his knees. He looks like he's about to cry.

"What?! You want to cry? How old are you?! Man up!" Mafuyu scolded and Nariyuki had to swallow his tears for that. Deep inside, Mafuyu is actually trying to hold her laughter, seeing the boy who used to be her student, is now a young man, about to get his degree. But with her punishment, that 22-year-old young man is nothing but a 12-year-old kid. 'Although I'm still angry for what he did in class, but to be honest he looks quite adorable.' Mafuyu thought to herself and had a small smirk, looking at a guy in glasses with runny nose and teary eyes. After torturing him enough, she removes the buckets out of his arms and also the cements on his knees, allowing him to stand up. But he is too exhausted that his legs are totally frozen.

"Long time no see, Yuiga-kun." She said and offered him a hand to help him stand up. 'Now you long time no see me...' Yuiga thought.

However, even if they don't want to admit, they both know deep inside that they miss each other. Nariyuki hasn't seen his teacher since the graduation ceremony and so has the pink haired. Mafuyu had to continue with her teaching at the academy, while Nariyuki was much busier at college. He kept in touch with his friends, with his senpai, Kominami Asuna, but he didn't do the same with his teacher.

One of the other reasons why he chose Ichinose Academy as his place to attempt the trainee program is he wants to see Mafuyu, to see if she's been changing since then. And to Mafuyu, it's also a pleasure to meet her former student again, although what he did in class was a 180 degree twist to her.

"Giving students false information? Publicly flirting other female students in class? Did that college teach you to be a player instead of a teacher?" Mafuyu asked and Nariyuki scratched his head.

"I just want to bring some fun atmosphere to the class..." Nariyuki admitted, but Mafuyu shook her head.

"Childish. So you want some fun in class? How cute." Mafuyu said, made Nariyuki blush a bit. "But how the hell could you mess up so bad? I thought for a former tutor like you, you should have some experience for it."

"Maybe I'm just used to teaching a small amount of students, after all..." Nariyuki said unconfidently and this made Mafuyu shook her head again, in disappointment. "B-But I did gave them homework to do, as a teacher's thing, right?"

"Yeah right, giving a terrible lesson with no clear information, then telling the students to read the lesson again so they won't be confused and understanding things wrong. That's pretty clever, I would say." Mafuyu said sarcastically, and she continued. "But you being unconfident in class, in teaching? That's a terribly critical thing for a teacher, Yuiga-kun."

After a quick thinking, she had made a decision to deal with this problem. "Yuiga-kun, for the next classes, you are going to be my assistant. You can't be teaching right now, so just sit in the back and watch me until I tell you, got it?"

"... Geez, am I actually that important to you, Kirisu-sensei?" Nariyuki asked and made Mafuyu blush. "S-Stop thinking like that! I'm doing it for your own good!" Mafuyu said, almost like a shout. After hearing that, Nariyuki just let out a small chuckle.

"Okay, thanks. I'll definitely do it." Nariyuki said, but then he had one more thing to ask. "If you don't mind, can you call me 'Yuiga-sensei', Kirisu-sensei?"

"Denial. Yuiga-sensei is your dad. Calling you that is such a disgrace to your father's name." Mafuyu said while giving Nariyuki a glare, bringing disappointment back to him, but she continued to pile it up more. "Beside, you're way too young and it's way too soon to call you that! Consider it yourself!"

O0O

"Ahh... What an exhausted day..." Nariyuki said while stretching his arms.

"What do you mean exhausted? You didn't do the teaching thing. If this is enough to be exhausted, then you can't become a proper teacher, Yuiga-kun." Mafuyu told him.

"Geez, sensei. Do you have to be so strict?"

It is now the afternoon, as Nariyuki is escorting Mafuyu to her car, preparing to end his first day as a trainee. It was exhausted to teach so many classes with the same subject, but he's sure that he learned a lot from his teacher.

As they finally reach Mafuyu's car, Nariyuki decides to say goodbye. "I'll be going now sensei. See you tomorrow." He told the teacher. However, when he turns around and leaves, Mafuyu holds him back by grabbing his shoulder.

"Where do you think you're going?" She asked and made the trainee confused.

"Um... to my home?" Nariyuki answered. But Mafuyu shakes her head. "The day isn't over yet. After all, I still lots of things to teach you. You'll be staying in my apartment for the night." Those words totally freeze poor Nariyuki.

As soon as Mafuyu turns back to open her car's door, she hears someone collapses to the ground. It's Nariyuki, who is kneeling and clasping two hands together, about to beg for mercy. His eyes start watering with quivering lips, looking forward to the dark future ahead of him.

"K-Kirisu-sensei... I-I'm sorry... Did I do something that make you mad? Can you please let me go home...?" Nariyuki looked deep in his teacher's eyes, asking desperately for forgiveness.

'Is this a 22-year-old young one or a 12-year-old kid?' Mafuyu sighed and thought herself, then she explained. "You still have some lack of ability to be a teacher. There are a lot more to learn- WHAT ARE YOU DOING?" Mafuyu shouted at him when she saw Nariyuki crossing his arms across his chest, like he was trying desperately to keep something.

"PLEASE DON'T HURT ME! I'M STILL INNOCENT! I DON'T WANT TO JOIN ADULTHOOD THAT EARLY!" Nariyuki cried, but was forced to stand up and pulled into the backseat of the car by Mafuyu. "What the hell are you talking about? Hurry up and get in!"

After some efforts of pushing Nariyuki in, which would look like a kidnapping to some people, Mafuyu starts her car and drives to her apartment, ready for another 'lesson' with Nariyuki.

"Hold on, Yuiga-kun. This is going to be a bumpy ride!" As soon as Mafuyu said it, Nariyuki starts having some déjà vu about driving with his teacher, and the song "Déjà vu" also starts playing in his mind. But it's too late for him, as he has joined the ride.

"No... No... NOOOOO!"

Chapter 4

The [X] of a predecessor and an apprentice (Part 1)

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Thank you so much for all the favorites and followings, and also the reviews from you all, they really mean a lot to me. I'm really enjoying writing this, and I'll definitely be writing more in the near future. Expect some updates ahead! See you soon.

- TheNameIsKaze -