were sethxzoe CG (choice 3) unfinished? im like halfway into the game and seems like the game started using other type of CGs
also to answer your question, being a rpg maker, this game is fairly easy to hack. i've been constantly hooking CE for speedhacks and emulating the game with 2x-3x speed because grinding with normal speed is unbearable. and simple value hacks should be possible since its follow the same rules as other rpgmaker type of games.
but if you were lazy, you can just use RpgMakerSaveEdit which can be found here
https://f95zone.to/threads/rpg-maker-save-editors.51/
this include editing monster kills so you can tackle those slayer/vanquisher title with only like 3 kills instead of 30