itch.io

Hello again! There's no wiki or list to what level you have to achieve to reach the NSFW content. Just keep leveling them up and you'll see it!

And no, I'm sorry but there won't be any male NPC that is available to unlock. Nor sex scene, threesome, futa, or trap.
There is no way to change your appearance, but if you keep playing you'll unlock a girl as a companion. And you'll have some scenes with her and the other girls, in future updates.