It's been a long time since I played a point and click, so it was fun to revisit it. It's understandable why they aren't quite as popular these days, mostly due to how obtuse they can be, but they're great if you enjoy solving puzzles.
Yeah, Senran Kagura is kind of a niche game and it's honestly though to look past all the fan service. Especially considering how shallow the game turned out to be, gameplay-wise.
Hmm, as for Sega Ages on PC, I'm not sure. I know Sega released some of there classic games on Steam but I'm not sure if it was just a compilation or individual games like the Sega Ages family of releases.