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Mahiru Shirota dislikes difficult things, preferring to live a simple life. But after rescuing a cat he names Kuro, life takes a turn for the complex. Kuro turns out to be a servamp—a servant vampire, named Sleepy Ash and the two form a contract. Kissing his simple life goodbye, Mahiru is pulled into the world of vampires, the seven deadly Servamps, and war. Life couldn’t be more complicated! (Source: Crunchyroll)