Thx.
Here is the answer to your question.
1. I have done the map, but I am still thinking how to implement it to the game.
2. Playing Video Games, watching comedy Utube videos, hanging out with friends, or having a good night sleep.
3. Koikatsu Studio. It is in the set with the koikatsu game that you can find on Steam. It is a very beginner-friendly software because all the character model is preset there. All you need to do is change the character body ratio and change the cloth you like with a few clicks. (If you want more clothing/ accessories/ body modification, you can download the mod using KK Manager)
If you already know the software, I advise you to go to this (https://db.bepis.moe/koikatsu) site to download the outstanding character for your reference.