Is Yingxiong Zai Lin hentai?
English title: Hero Return
No
Rated R (17+ (violence & profanity)) on MyAnimeList and not tagged as Hentai.

ONA · 2020 · 12 episodes · R - 17+ (violence & profanity)
Action, Sci-Fi
Zero was mankind’s first real superhero. Under his watch, countless other superheros appeared and followed in his footsteps. However, after 5 years of war, Zero disappeared without a trace. (Source: zeroscans)
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