I've seen plenty of new aspiring game devs jump into game development without realizing how much work might be involved with it. There is also the importance of learning the tools you use and the basics of game development.
I do hope you continue your project once you get your foundation set.
If you are still trying to use Koikatsu as a tool, you should use the Better Repack versions, and get familiar with it. It will make the game making process a lot easier. If your using Renpy try to learn as much as you can before you start doing game for profit.
Game Development with Renpy tutorials: