Our string ( Nagisa x reader)

onee-chan

Bitch sensei was teaching a lesson on how to use your body to distract you opponent you were really listening for some reason until you took your attention to your notes

Sensei: Y/n

You shoot your head up to look at her

You: yes

Sensei: come up here I wanna use you as an example

You walk up and stand next to Bitch sensei

Sensei: now Y/n's chest may seem a bit smaller than mine  but when we were in the water yesterday her chest was much bigger then we thought so Y/n has a good way of surprising her opponent by taking them by surprise

You blush and cross your arms over your chest she pats your head and smiles

Sensei: and Y/n since your going out with Nagisa do you know any if his soft spots?

You nod making her smirk

Sensei: Nagisa come up here

Nagisa stood next to you knowing what's about to happen

Sensei: now Y/n I want you to show us Nagisa's soft spot

You smirk at eachother you smile at Nagisa and step behind him then place your fingers at his earlobe making him close his eyes shut with a dust of red in his face

You: Nagisa is really sensitive to my fingers against his ear

Nagisa: I am not!

You slid your fingers slowly from the top to bottom of his ear making him moan loud enough for the whole class to hear everyone except Nakamura and Karma widen their eyes you giggle at his attempt to deny

You: you sure about that?

Sensei: when did you learn that Y/n?

You: I spent the night at his house I was messing with his hair and my fingers hit his ear creating my knowledge to his soft spot

Sensei: Nagisa do you know any if her soft spots

Nagisa: n-no

Sensei: well isn't that something you guys can go back to your seats great job Y/n

You: thanks Bitch sensei

Sensei: that's onee-chan to you

The class looked at you with their jaws open as Sensei pats your head

Toka: how come she gets to call you onee-chan!?

Sensei: because Y/n has earned it

You sit back in your seat earning a whine from Toka on your way back

Sensei: oh and Y/n meet me after school for extra lessons

The drop their jaws again and stare at you

Kayano: how come your giving her extra treatment?

Maehara: yeah some of the boys want extra treatment

Sensei: that's because Y/n is my favorite

they gasp and you sweatdrop then Bitch sensei continued with the lesson