Stop giving 0% corruption enthusiasts false hope!! xDBunny door has an immediate victory, if you rescue the victim and successfully jack the dude off before cumming
It's been a while, but iirc to save the "victim", you need to let Rui's endurance drop to two hearts (3 orgasms so 3% corruption at the minimum I guess - to have time 'pass' in-game), and only then can you talk to her.
Though DO correct me if I'm wrong - turned out you can actually 0% the forest door too with some insane luck and a whole lot of save-scumming, so technically I was wrong about that lol. I'm curious now.