Is Toaru Kagaku no Railgun 4th Season hentai?
English title: A Certain Scientific Railgun Season 4
No
Rated R (17+ (violence & profanity)) on MyAnimeList and not tagged as Hentai.

TV · R - 17+ (violence & profanity)
Action, Fantasy, Sci-Fi, Super Power, Urban Fantasy
Fourth season of Toaru Kagaku no Railgun.
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