Main protagonist of the Nyarko-san series.
Mahiro Yasaka's ordinary life suddenly turns upside down when an alien chases and attempts to kill him, only to be saved by the Nyarlathotepian called Nyarko. He then finds himself under Nyarko's protection from other aliens who want to either kill or kidnap him. Yasaka's house is filled with more H.P. Lovecraft characters, Cthuga and Hastur shortly after, much to his chagrin. Yasaka now has to deal with the three aliens that now live under the same roof as him. Yasaka tends to attack Nyarko with forks whenever he is annoyed by their actions.
He is voiced by Eri Kitamura.
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