How about just delete all of chapters 1-4, the game starts with you becoming the temp. head master, you try to hit on one of the girls on your first day, the waifu, another girl catches you, you get in trouble, people think you're a pervert, you get locked in your office as punishment, you decide to corrupt the girls and break the rules, skip straight to talking to the girls and trying to get them to like you and/or corrupt them, get out of the office, etc. first with different outfits, the bathing suits, then stripping, then touching, handjobs, fingering, bjs, sex, orgies, public stuff, etc. Grand finale is an orgy with all four girls, then you go to jail...but shortly after your waifu breaks you out and you run away together, happy ending?
Honestly I just want to nut inside Luna while she makes that one smirk.