no no no there'll be no who's "top" and who's "bottom" here, that's yaoi nonsense. and one of the things i like about yuri, because it's hardly brought in here. it is one of the stupidest things imo. on avg there is no top or bottom for people, just what you're in the mood for, and silly to try and define someone by it. who initiates it is something that can be debated, but that doesn't mean "well that's my role in sex now, that's the only way to do it from here on." like, i can see yuu initiating it, cause sempai is too afraid to do something yuu wouldn't want, but once it's done the first time, touko would be more than happy to start it, given the green light so to speak.
on another note, really happy it's not stopping and ending on their hooking up like almost every other yuri out there