Extremely well written and... horrifying , honestly. Fairy's complete helplessness at the hands of Adventurer is conveyed quite strongly, it made me so anxious about what would happen next. It was painful to see her go from being so cheerful and spirited at the very beginning to being practically hollowed out. I also really like the way you wrote Adventurer. I was able to get a sense of why she's like that, without feeling sympathy for her.
Asides from the stellar writing, the presentation here might be your best yet! I think a lot of people have mentioned the amazing UI you made already, but I also want to complement you on the CGs! The aesthetics kind of reminded me of old PC Engine stuff, so that was really cool to see!
On one last note can I just say that the demon design is AMAZING and uh wow
Great work and thanks for making this! Looking forward to seeing what you make next!