That kind of thing is classified under Vice, and it can be avoided while still doing plenty of sex in Roya (a few options will be unavailable such as the Homewrecking quest). On the other hand the IRL storyline has Aura becoming an entitled, deluded brat by the end of the current content, so you want to minimize Corruption through Blessed Water items, time management and not using Star Knightess. So far, that's doable. By 1.0, well, it'll depend on which point exactly you want to stop corrupting IRL Aura.