My best friend was cursed by a demon.
I want to work with the three heroines to save my best friend from the devil!
- Title: Black promise
- Developer: Charcoal Grilled Bontan
- Publisher: Charcoal Grilled Bontan
- Release date: 17 Nov, 2020
- Version: Final
- Language: English (AI MTL)
- Censored: Yes (Mosaics)
- Store: DLsite