That's fair, but if that's anything like Princess of Zeven and the writing holds up after translation, then I would argue it's not a fault but a feature instead. In my opinion, good dialogue is what makes or breaks slow burn corruption games, the CGs and art are secondary to the writing.
So long as the writing's good I'm fully onboard. Zeven really surprised me, many of the reviews shared your sentiment of "reused CG's" but that wasn't a problem for me so I doubt it will be with Grace either
EDIT: Zeven is one of the best slow burn corruption games in my opinion. Thought I said that when I commented this but I forgot lol