Is Mahouka x Mameshiba hentai?
No
Rated G (All Ages) on MyAnimeList and not tagged as Hentai.

CM · 2017 · 4 episodes · G - All Ages
Comedy, Parody
A collaboration between Mameshiba and Mahouka Koukou no Rettousei meant to promote the latter's film release in July 2017. In the first short, Tatsuya is replaced by a Mameshiba Edamame version of his character recreating scenes from the TV anime. A new collaboration product line is being released as well with assorted Mameshiba-ified character goods of Mahouka characters.
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