A boy with green hair and red eyes, named after the green lizard ("tokage" means "lizard") Ian once saw as a small boy. He hates Ian and does everything he can to hurt him and cause him trouble. He can fly and appears and disappears whenever and wherever he wants to.

After Ian gets a Fairy Cube from Kaito, a strange mark stretches from his right cheek across his right eye to his forehead, the same mark the lizard in Ian's Fairy Cube is bearing. When Ian dies, Tokage takes over Ian's body and life, his green hair and red eyes invisible to human beings.
Unlike the timid Ian, Tokage quickly starts to pick fights and create a gang of sorts. This is partly due to his past, he grew up loved by a fairy named Ducie, but when the village they were in decided he was to be sacrificed to their god, Tokage slaughters them in a fit of anger and despair. Ducie died apologizing to him, shocking him back to sanity, while the sealed god escapes. After that Tokage has killed thousands to escape the fairy realm and return to the human world, where he then focuses on tormenting Ian until he made a pact with Kaito and seizes Ian's body.
He is later revealed to be Ian's twin brother who died in the womb. When he died Kureha, their mother, left him in the Fairy world where spirits can live. His real name is Isaiah.
By the end of the manga, Heriat Verret accepted his soul and gave his body to him. Through this, Isaiah already gains a body with blond hair and green eyes though he still looks like Ian since they are twins.

He also appears in the short story Psycho Knocker.

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