Completed
15 episodes / Studio Pierrot
The anime
About HERO MASK
A mysterious mask appears before James Blood. The man wearing it should not exist, setting up a crime mystery in the city.
- Format
- ONA
- Status
- Completed
- First aired
- December 3, 2018
- Final episode
- December 3, 2018
- Episodes
- 15
- Episode length
- 24 minutes
The cast
Featured characters
Behind the characters
Voice actors
Behind the anime