Akira Miyamoto seems to have a reputation as a troublemaker, as one of the disciplinary committee members says he is "up to something." He cares more about revenge than returning to the human world. The janitor also mentions that he wishes to become a boxer and the former wishes to train him to be a champion.
Akira is a student of Karukozaka High School, Class 2-C. He is a playable character only available after beating the game with either Yumi, Charlie or Reiko. His route claims to be a kind of "revenge" against the demons who sucked the school into the Expanse, proving that he is unwilling to go back home. Different from other routes of the game, Akira does not visit any kind of Sin World, but the Land of Nomos. As Akira continues on his quest for revenge, he is killed and possessed by the demon Amon. The Amon possessed Akira eventually slays Deity Emperor Hazama with the player's help. Amon then takes his place as the new Deity Emperor, and returns the player to the real world, however the school remains in Makai.
Akira's last name and his possession is a reference to Amon Miyamoto, a Japanese stage director. It is also a reference to the manga Devilman, whose protagonist, Akira, gets possessed by the demon Amon and gains supernatural powers.
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