The game is great. Play it. The mother is in a dead bedroom with her Husband, who cheats on her with his secretary (who is a potential love interest but nothing realized yet). The daughter is MCs girlfriend who can be seduced by her teacher (but there is more to that story, involving a childhood friend who may be a friend or an enemy depending on how you treat her). Your childhood friend can also be a love interest even though she has a secret that makes that complicated. The NTR content is fully avoidable except in the case of the secretary (if you consider it as such), but if you like NTR content it is great in the case of the girlfriend.