As for the post you wrote on my wall which I can reply to but in limited words...There should be more of an option to skip time to a certain time. I've already completed some characters so mostly everything falls on the weekend or evening. Would be a better option to skip to weekend or a certain time. Yes you can sleep until 11am but its still an issue. well more of a frustration.
The weekend bug I tried sleeping however upon sleeping it will say the week day is Monday - Friday but act like the weekend ie the characters will all be at home instead of at work etc and regardless of what I tried it wouldn't fix it. As for the potion making when you go to the cave and can create potions at the alchemy bench it can bug out. In my case I created a potion around 10pm and when it hit midnight as it supposedly takes 2 hours it was still lighting up with the light bulb and not budging. I waited days/weeks (ingame) and the same issue persisted. I also hit the cave many many times and couldn't find another so this is why I gave up on that save.
There is a computer right next to the bed so you can do your homework and avoid losing intelligence while gaining some. Otherwise, you can interact in the 4 corners of the map in the places where there are always NPCs (at Sweetie's, gym, Bar, doctor's office). During the weekdays, everyone is at work or school, and besides, I haven't finished integrating the quests yet. So there is no paywall.
Regarding the weekend bug, I think I know what the problem is. I will look into it so that it doesn't happen again.
For potion making, it takes 2 hours per potion, so the more potions you make, the more time it takes, but the alchemy skill allows you to reduce the time by 10 minutes repeatedly ( At max, there is no more waiting time). Additionally, it gives a chance to obtain bonus potions.
You can get potions that increase the hero's skills by killing bosses, and it is possible to obtain corruption potions from chests.