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Claiming to be of vampire origins, Inui (as stated by Yukari) is a player who takes up the title of vampire to drop a females guard in order to approach them. In fact, he's a Onimodoki, creatures who pretend to be powerful monsters, in Inui's case a vampire, to intimidate other races but are actually weak. This truth as an Onimodoki was revealed by Tsukune by stating that the vampire he knows are honorable monsters and an actual vampire can kill him with one hit; but the actual idenity of Onimodoki was revealed by Inner Moka.
- Inui appears in a bonus chapter of Rosario-Vampire.