I suggest playing Sileo and Adastra. If you're looking for something government-y and space travel and stuff like that, Adastra might be a good option, though it only has one character that can be dated. On the other hand, Sileo is very good as After Class, only Sileo isn't school-oriented. There are four routes, but two are still unavailable due to the second route being worked on for the meantime.