You don't really need to be able to code in rpg maker, as there are a lot of already made plugins that you can use for free, after you buy the program.so heres the thing. i want to make a game like this one. im a good lewd artist but i cant code to save my life. so i wanted to know if Doc used any coding or was it all form RPG MAKER.
Rpg maker itself is also quite easy to use, and it has a big community where you can find a lot of guides on how to do many different things, and if you have questions on anything, then you can usually ask someone on some forum about it and get some answers.
The only way were it becomes a bit code heavy is if you want to make custom made plugins for your game, as you then have to make them yourself (or commission someone to do it i guess.)