Another one of those no-reason love stories where some weird reason for the girl coming the guy will come much later or not at all. Thankfully I don't give a shit about that and this is really nice and cute.
Damn, so chapter 16.5 is basically telling us she got sexually abused by an older guy, though I think the comments section is getting abused a lot more lol
The imouto just seems like a step too far in the unnecessary direction, like that's actual trash shoujo level random cruelty like a Minami Kanan villain or something