Some things I want to suggest to the dev after starting a new game and playing through again:
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- Outdoors stuff
The university is already in the middle of nowhere, and looks to be next to a lake, so some camping, fishing, and hiking could be fun. Maybe hiking could act as an alternative to the gym that would also relax the player, though would take long. Maybe have different routs for more or less exercise. Particularly hard route could lead to mountain climbing if wanted, could give a new skill to level, maybe adding a bouldering gym to the town could help with leveling your climbing skills up.
Both fishing and camping would be fun as solo or group activities. Would be nice if you could invite multiple people on a trip rather than just one. You'd need to buy a boat, rod, and bait for fishing, or a tent, sleeping bag, and something to cook with for camping. Obviously there'd be levels of lewdness for each. You could also bring some beers too, but drunk and wilderness to mix very well. Probably need a degree of swimming before fishing though.
Could probably introduce a new club round hiking and camping too, and maybe a park ranger job? Helping lost people get out of the forest, cleaning up garbage, and wrangling drunks out.
Could probably have a pseudo-expedition with the biology class to simulate field work too.
- Weird botany (Alchemy?)
Dumb idea, I know, but mixing the biology and chemistry classes together, maybe you could grow weird plants in the greenhouse (or just weed.) Could make some weird chemicals out of the plants to make drinks with various effects. Probably illegal so you'd have to keep it under wraps.
Work with the nurse or biology teacher to get freaky stuff to happen
- Selling art
As it says. Draw or paint stuff, and you could sell it in-person or online. Maybe have something like a student market every few months you could sell you stuff at, or at a different event I'll mention later.
With good enough art skills and low enough inhibition, maybe you could design your own sex toys? Could be a side-hustle, but you could send designs to either the sex shop in town or the one online or something like that and make it for you. Added points if you can hide the objects in every day objects? (Like a pillow or a plush)
- Convention
Maybe I missed it, but I think a convention could be fun. Not sure where you'd put it (maybe a new building in town?) But once or twice a year there could be a generic 'fandom convention' you could go to.
Cosplay? Might be hard to implement.
Could sell your art here. Would cost money to get a table but the art would sell better. Similarly, you could buy items unique to conventions, like shirts, posters, etc. Maybe they'd give unique buffs?
Could go to it with a bunch of friends. Added friendship would depend on how 'nerdy' they are.
Competitions. Sort of like the arcade but longer and with a bigger prize pool.
Meet with celebrities? With the right celeb and right amount of seduction, maybe you could get a kiss or fuck them?
Obviously, there's a lot of people to meet, so if you have a lot of friends or enemies, you'd have a lot of incidental encounters.
Orgy rooms. Cosplayers after-hours and such.
- Hacking?
I haven't gone too much into comp-sci yet so this might already be a thing.
Could do some white-hat hacking to get money
Gather blackmail material on specific targets
Could also do black-hat hacking but then the police would be on your ass. Probably one of the only 'game over' situations.
- Pets?
Could be fun. I dunno.
- Lockpicking skill
Could also lead into a thievery skill
Would also get the police on your ass
- Music Festival/Concerts
Would be held at the same place conventions would be set
Held during the times conventions aren't
Basically a prolonged rave.
Multiple musicians, could choose who to listen to
Friendship buffs to everyone there if you're wearing the appropriate attire to that musician's venue
Good way to farm a lot of friendship really fast
Lots of sex in the toilets
Maybe sex with musicians too?
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That's all I have now. Just a bunch of random ideas. Dunno if the dev will even see these, but thought they'd be good to share nonetheless.