Ouch, that's complicated and tough and that could be the reason why you could not add the gallery, and since you said you want to make a short visual novel, i would suggest a short visual novel game set in a nudist beach game where you play as a naked guy or girl having sex with their naked girlfriends, but it will be more work, and you are busy with personal life, and you are working on another game called Jan ken pop.
By the way i wish to add the code to the at pervert but i couldn't find the cheat code section in the option menu in the patreon edition of That pervert , so how will enter the cheat section before entering the code in the patreon version of that pervert
and also can you include some cheats in both Bus voyeur and later Jan ken pop at least the patreon versions jsut in case if the games are difficult?