Is To LOVE-Ru: Multiplication - Mae kara Ushiro kara hentai?
No
Rated R+ (Mild Nudity) on MyAnimeList and not tagged as Hentai.

OVA · 2017 · 1 episodes · R+ - Mild Nudity
Comedy, Ecchi, Harem, Romance, School, Sci-Fi, Shounen
On what would typically be another ordinary day, Lala Satalin Deviluke takes one of her recent inventions—a robotic cat with cloning powers—to school for a chance to show it to Rito Yuuki. Upon accidentally touching the gadget, Rito begins repeatedly duplicating himself, and the school is soon entirely overrun by a horde of his clones. The only way to deactivate the cat is to hold its tail; however, its agility makes this a challenge. Will Rito's army of himself be able to catch it, or will the Earth be flooded by an unstoppable wave of duplicates? [Written by MAL Rewrite]
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