Is Servamp Specials hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Special · 2015 · 4 episodes · PG-13 - Teens 13 or older
Comedy, Fantasy, Josei, Vampire
Sleepy Life of SERVAMP When they are not busy battling supernatural threats, servamps and their Eves enjoy carefree day-to-day affairs and lighthearted quarrels. Naturally, while other servamps and Eves work through their own troubles, Kuro plays video games and dozes off—not much of a change from his usual sleepy self. Hai ni Mamireta Shoukei: All the world's a stage During a fight, Hyde recalls the time he used his charm as a hedgehog to trick Licht Jekylland Todoroki—piano prodigy and self-proclaimed angel—into forming a blood bond and becoming his Eve. [Written by MAL Rewrite]
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