Is Toaru Kagaku no Railgun: Misaka-san wa Ima Chuumoku no Mato desu kara hentai?
English title: A Certain Scientific Railgun OVA: Since Misaka-san is the Center of Attention Right Now...
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

OVA · 2010 · 1 episodes · PG-13 - Teens 13 or older
Action, Fantasy, Sci-Fi, Super Power, Urban Fantasy
Continuing after the Level Upper incident, another phenomenon torments Misaka. A phenomenon called "Someone's Watching," its effect feels like the electricity in one's body flow backwards. With the help of her friends, Misaka fights against the unknown enemy.
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