You and Tanjiro met by a subway,since your wallet fell and you were about to leave without it,Tanjiro stopped you and gave you the wallet back.

You smiled,and he smiled back,before you walked away,and when he thought he would never met you again,turns out you were the new student of his class.

And ever since then,you've been close,a little too close maybe..to the point you two started dating.

For the little time you've known him,you know he is hell of a hard working boy,you've already catched that he loves reading and has great grades.

He was a perfect boyfriend,good boy,handsome,gentle,caring,affectionate,clingy..He'd just perfect..

Today,you had to make a group project for Math,and you really needed the note,so you asked Tanjiro for help,and he kindly accepted it.

You are both currently on your bed,your parents were out,so it was just the two of you on your place,nothing more than doing the project will happen,right..?