It has no hentai or anything like that, it's more of a conceptual thing, like Pokemon but with women, think of a typical harem anime and that's what I'm talking about, you get as many women as you can who will worship you. Never will any nudity be seen it's all about the concept. Then you can start families with them and raise some NPC kids that you can train their stats and eventually hop into their body if they turn out better than you etc. Sub-goals include things like buying a house and fancy cars and stuff.

It's a roleplaying thing.