Love the game but I'm not exactly sure on what tells you which path you took and if the nuns are always on corruption like I'm confused about that.
Viewing post in Lewd Town Adventures comments
From Day 12, choosing to give girls the drug corrupts them.
Following the Tasks in the Journal leads you to corrupting the Nuns, University Girls, etc.
For the time being (v 0.8.1 and earlier) there's not really a way out of doing that. It is planned to give players on the "good" path a choice later on. The game still has a ton of content planned. Even if we hit v 1.0, it's not the end.