So... After a lot of thinking and contemplating, I have decided the next crossover.
I was torn between Levi reader, Muichiro reader, and Toji reader because both will be good. However, I think Muichiro reader will be good because the reader will be lost most of the time which will make the main characters protect them. Second, it will be funny to have Y/N forget things all the time. Last but not least, Y/N will have Muichiro's physique which means they will be cool! As for the reason of the joining, let's say that they couldn't pay the hospital fees because of a sick family member.
So, what do you think?