ok let'me help you, i stood in your same shoes yesterday, you did the erotic manga and the conference room handjob, the next if i'm not wrong is the exibithionist, talk with the boy on the west part outside the school(you probably already have cuz you unlocked the district), buy the adult AV of exibithionism in the AV store East of the red light district(and watch), if i'm not wrong you still have money to it, you only spent money with the erotic manga, and now with the AV, that's why i said to not cheat your save, things are kinda of linear in a subtle way, no grind, if you already buy the eletric mastubator and don't have money to the AV maybe you have screwed things(just a maybe cuz i don't remember if this affect the game, i think it does), because you should look into the sex toys in the next request(nursery boy)