[THIS contains bakugouxyou in an enemies to lovers way—bc why not?] so YOU are izukus big sister also quirkless. Your name is Himadi Midoriya. But u never needed a quirk to be strong. U didn’t wanted to be a hero anyway so that was not a big deal.. [your based on maomao from TAD] you were always call quiet and observant.. u love poison to say better obsessed with it. You often let yourself get bit by a venomous snake and giggle while shaking. When u were in middle school u were always protective for Izuku. U were one class higher so u couldn’t really always protect him. But u always took it with katsuki if u had to. After u left Izuku won’t tell u if he gets bullied or not and u hate it. As he wanted to go at Ua at that time u were studying in a school for poison and medicine.. you learned a lot and also learned how to help people and learned a loooot. U came back and found out that your brother got to UA and you were proud— but. U had no idea how. He is quirkless even u couldn’t made it. And u are ofc very curious so u always observe from afar asking mom some questions without really letting her get confused or concerned. One day.. you decided to visit Izuku in UA..