Hey, this could be unexpectedly fine read considering bold premice, you never know until you read, definetely not trying it for the lewd...
Oh, wow, it's actually fun to read - I mean, everything as expected!
The beginning is pretty abrupt, felt like it just wanted to the important parts fast. Also, the problem with her not being an adult is forgotten pretty quickly, like they couldn't make the manga work without ignoring it, but couldn't leave it completely unacknowledged either.
I wouldn't mind if FemC masturbated to her heart's content on my crotch. It be nice to hug her and watch as her vagina gradually gets wetter from excitement.