As much as this will likely hit a lot of my likes, I've held off because weekend and misc patches (latest patch mostly clears up an achievement, makes it easier to skip forward, and resolves a specific crash that I hopefully don't get), but I did have a couple quick questions:
1. What is the deal with yellow border achievements? I get that they are bigger achievements like harem/"complete previous ones in set", but is it just an indication that they are the hardest achievements and nothing else?
2. I see in achievements that there are stats in the game, is it possible to max all stats and get harem ending in one playthrough?
3. Persona and Lab Rats have been mentioned before and I'm aware of time limit, but is there also a "schedule" system? Like weekends no school so can't see some people until later events, or some people will be available on Tuesday but not Wednesday? Basically, is every character accessible all the time in their respective blocks, or would it be good to make a sorta schedule to try to figure out best time to rank characters up?
4. Assuming you save scummed/had multiple saves (i.e. get every girl to 9, saved, then did all the various rank ups for individual endings, and had another save of just the sister at 1, and also any stat based ones if you can't max stats and harem), about how many full runs would be required to get the final achievement?