Izana was Mikey's adopted older brother; they were separated as children but met again in adolescence. Since Mikey and Izana don't get along, conflicts arise between them. *this time the conflict was due to the fact that Mikey said that Shinichiro did not consider Izana his brother. (Shinichiro is the deceased older brother of whom Izana loved so much) Mikey: I'm telling the truth! Shinichiro didn't consider you his brother. Mikey crossed his arms over his chest with an impassive face.