It's about the demon kings daughter. She is sent to destroy humanity but decided not to because it's to much work and she is scared of humans. She wasn't born but was created in a science experiment. She ends up holing herself up in a abandoned church in a also abandoned town. There was a dragon in the church but the dragon ran away when she couldn't beat the demon kings daughter. The main characters name i think was iris. Eventually the demon king finds out she ran away and the scientist who made her makes another for the demon king. But she has a split personality that loves sweets and ends up not destroying humanity because then she couldn't have chocolate. Her name was eclipse. I remember that part . If anybody knows what the story was called please help. I can't remember it's name and I can't find it anywhere and it's driving me crazy because I wasn't able to finish reading it. Ps it's not a isekai just thought I should point that out.
I haven't read it but is it this? The Demon King’s Daughter is the World’s Strongest but a Shut-In! ~Shut Herself in an Abandoned Church to be Revered as the Goddess~