My sunshine | A Mirio Togata x reader story

Reader, (Y/n Amajiki, class 1A, quirk: ninja, age 15), is the lil' sister of Tamaki Amajiki with completely the opposite personality. One day Tamaki says he has a surprise for Y/n, but it doesn't go entirely as planned..

Warnings: Swearing, Smut at the end (bit illegal but who tf cares?), Fluff and LOTS AND LOTS OF CUDDLING!