Walking down the pavement with a skip in your step, following after you was your brother who was just... done.

He was exhausted, irritated, frustrated, embarrassed, oh how the list goes on.

Katsuki could do nothing more but glare at the back of your head hoping that you can, for once, burst in flames that can actually hurt you.

Oh hello, you must be heavily confused about what was going on and thought that you might have missed something! Well, you did. And as the author, it is my duty to show a flashback that will explain the situation!

(Behind the scene: Lukas gets a box of duck tape)

[Flashback Time!]

Changed back into their uniform the class chattered amongst themselves, some were quiet and others were still jumbling their head over the day. Katsuki was obviously grumbling to himself as he chews on the strap of the medal.

It wasn't long till Eraserhead came causing everyone to sit down.

"Good job," He told his students "There is no school tomorrow and the day after. You may get offers from the pro-heroes that we're watching today but we'll gather those together and announce it after the break, so wait in expectation for it as you rest."

"Furthermore, Bakugo you have a guest..."

Hearing such words made the blonde's stomach drop in an instant. 'I have a guest...? I have A Guest? Me??? Have a GUEST!?'

The door slid open and with a large toothy grin the young child wave massively at the crowd of students. "Hellooo! I am Bakugo (Y/N)!" You shout out to them.

'...What?'

"The hell you are doing here!?!" Katsuki immediately yelled once his brain clicked. Without a care you shrugged your shoulders with a smug smile "Tora and Koyo ditched me, so I went looking for you!" you told him playing the victim when it was obviously the other way around.

"Um... Aizawa-sensei," a green-haired female student raised her hand. "Yes?"

"Isn't it not allowed for none students to roam around the school ground?" she asked voicing some of the student's questions.

"They were very annoying, this thing kept bothering me to bring them along." The teacher replied lazily.

'Huh? That never happened... Did it?' You blinked at the adult male before your fin twitched when you heard movement at the door. "Oh, Uncle Nezu!" You chirp happily greeting the short, white-furred bear-mouse individual.

With a smile, the male greeted you back before looking at the students. "Don't worry about that. I have given the young one a visitor ID-- Make sure you don't lose it okay?"

"Yes, sir!" you salute to him.

Over with Katsuki, he is having an internal crisis that no one would even guess from the blank/angry face he still held from the festival. But he wasn't the only one.

'Bakugo? A cousin? Or family member right? Kacchan doesn't have any younger siblings from what I remember...' Izuku thought with his green eyes big and wide, 'When I first saw them with each other I initially thought they were his cousin and when they called him 'Big Brother' it was just for formality.'

"Are you a relative to Bakugo?" Another female student, this time with bright pink hair and skin, asked leaning forward onto her desk.

"Relative...?" You repeat not understanding the word before thinking. But you let out a soft childish giggle before proudly looking at them with your hands on your hips showing a kind of cockiness that can easily be identified in a certain someone.

"I am his sister!"

[Flashback End]

Who knew that such a simple sentence would cause such a racket. In the end, Aizawa decided to let them off early since he became even more irritated from their banter. Just the thought of the event gave Katsuki headaches and migraines at the same time. His brain was having no rest.

"Your friends were so much fun!" Happily, you chirp ignorant to Katsuki's mood and his dangerous glare that bore holes into your head.

Of course, it was either cause you are dense or just don't mind, that you grab on to his hand without a care and swing it playfully while you rant about your day and the new people you met. Katsuki took this opportunity to squeeze the heck out of your hand... but...

'Fuck their strength...!!!!' He thought bitterly noticing you couldn't feel anything for your passive strength was now thrice his own.

Glancing up you noticed his scary face again before deadpanning "I won't fake cry to make you happy, "  Your comment made him irk but he rolled his eyes muttering an 'of course' under his breath to your added comment.

"Plus... There's no one to guilt trip."

You were never afraid of his face no matter the expression. You used to be before and you admit you still are when the atmosphere calls for it. Like if everybody is happy and celebrating but he is grumpy? Yeah like that.... wait that's all the time... But yeah, he doesn't really scare you that much anymore.

Well, you wouldn't know how to explain it or put it to words but there are times when his expression scares you... Though this ain't one of those times.

Looking at your grin Katsuki felt like barfing since it was so bright and its luster glow made him go blind, but you mean well. He just won't acknowledge it or even think so cause he is really mad, like so mad and embarrassed.

'I can't even look at the thing next to me'

Was his downright thought as he let his head hung back int exhaustion. "You are really tired for someone who made a big fuss at the awarding..." You notified him now hearing his teeth grind just to release stress.

"I am still fucking upset about that!" He roared causing you to plug in your digits in your finger as you watch him rant. 'This isn't working I can still hear his annoying voice...'

'Where does he even get the energy and the voice to screech all that??'

Noticing your dumb look Katsuki sighed and looked down at you with a serious expression.

"Here, let me dumb it down for your slow brain to process, "

"Hey--!"

"Imagine if you were getting ready for a fight. You heard they are a strong opponent and you have been hyping yourself up so you show people that you are more powerful than them..." He explained in a sense that you finally start to understand. "So it is fucking annoying that some annoying family problem got in the way of them giving it their all!!!"

You let out a hum processing his words before half agreeing, "But you really didn't have to be a baby and run a tantrum in the stage..." You say smirking as Katsuki's head snapped ferociously at you in a millisecond.

"You know that sort of thing is so 3 years old."

"You are a fucking 5-year-old with a fucking tail that has tantrums like a bitch."

Your tail twitched at the insult before swiping and grabbing on of Katsuki's ankles and roughly pulling it in the air before dragging his ass down the pavement ignoring his threats and clawing that he lashed out despite already acknowledging they can't faze you.

You basically humiliated the male as you dragged him almost the entire way home with watchful eyes of people.

Unaware of the peeving eyes that never left your form as you and your, now standing, brother enter the train.

Feeling eyes on you, you looked up. Your eyes widen as the familiar pair of dark eyes that glint with danger and evil intent. The aura of malice he let out sending shivers down your spine, but when a person came to break the line of sight you both shared...

He was gone...

You blinked in confusion and took a wife in the air before frowning. 'I don't smell his after-presence... Was he even there in the first place?'

[A/M:] After-Presence: It is the lingering scent of a person which is evidence they were at one spot before moving.

Hey guys! You were all asking when I'd publish and I did day soon but I was having second thoughts with this chapter since I lost ideas while in the midst of it. And then suddenly had ideas for another book... As always.

But I hope that the next chapter won't take long to be published next.

Thank you guys for being patient! I love watching my notifications fill up with comments from you guys. 😆