Is Chuukou Ikkan!! Kimetsu Gakuen Monogatari: Valentine-hen hentai?
English title: Junior High and High School!! Kimetsu Academy Story: Valentine Edition
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.
ONA · 2021 · 4 episodes · PG-13 - Teens 13 or older
Comedy
Zenitsu Agatsuma is determined to be the subject of adoration by receiving chocolates on Valentine’s Day—and this year, he is taking no chances. Enlisting the help of his friend Tanjirou Kamado, the two are prepared to learn from some of Kimetsu Academy's most popular figures. Together, they ask Kyoujurou Rengoku, the history teacher; Giyuu Tomioka, the PE teacher; and Tengen Uzui, the art teacher, about the secrets to their popularity. However, only time will tell if following their advice will bring the same success for Zenitsu. [Written by MAL Rewrite]
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