He's gay
He was born and lives in Tokio.
He works as an investigator of supernatural creatures. He has an ill obsession with demons.
His eyes are a very pale shade of blue.
His hair is black, with just one white strand. It reaches his shoulders
He has a personality dissorder, making him have two main personalities. One is shy and kind, a loving parent. The other is a mad, crazy and obsessed scientist who'll do anything to reach his goal of resurrecting a specific demon.
He wears glasses.