Is Hero Mask hentai?
No
Rated R (17+ (violence & profanity)) on MyAnimeList and not tagged as Hentai.
ONA · 2018 · 15 episodes · R - 17+ (violence & profanity)
Action, Detective, Mystery, Sci-Fi
Now there's a mysterious Mask before James Blood, and the man behind it is one that shouldn't exist. What is the mystery surrounding this mask...? So begins an action-packed crime story set in a beautiful city!
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