Make sure you read the rest of this thread, chances are the question has been answered and you just need to figure what the menial steps needed like taking every option again or raising the stats as much as possible, including the 'cancel or run away' option in some cases. We answered the more difficult ones already at least, so if you're missing something chances are it's some event you forgot or didn't to trigger that you had available from the massive list of shit to do in this game. At the very least, none of the more cryptic stuff is left unsaid, it's mostly just trial and error you guys are missing.
The google translated guide kykyly posted has done me quite the service despite being barely legible. Looks like after you do the towel event you can let the cactus guy touch her chest. After doing it with no bra, you can continue with the Shrine as a new option is available. After that I made the girl tired and go to sleep, then in her half pajama state, take shower and use a towel which activates a whole set of other events with the same people previously from wearing the towel. I'll keep following the guide, hopefully the Japanese have the rest already completed.
EDIT: Here's my save file if you want to skip ahead. Don't blame me if you get even more stuck then before since you don't know where all the events are. Keep a backup of your own.