He is Kusuo's older brother, a super genius who likes to invent machines/devices. He is 2 years older than Kusuo. He is also deceitful, always showing an angelic smile towards their parents. He absolutely hates Kusuo, but is unnervingly affectionate toward his little brother. He is also obsessed with Kusuo and can be attention seeking and selfish. He has become obsessed with challenging his brother, and those challenges often fuel his sadomasochistic tendencies. Very emotionally manipulative.