Muichiro and Yuichiro always fight

Yuichiro physically: Like Muichiro, he has pale skin, light navy blue eyes with very long black hair with light blue mint tips. Muichiro has his hair down while Yuichiro has it tied up. Yuichiro has an arm transplant from another person, so he has a large scar all over his arm. Yuichiro is the same height as Muichiro despite being older because they are twins.

Yuichiro mentally: He gets angry easily but can be patient, when he gets angry he screams and doesn't think about what he says. Yuichiro is overprotective of Muichiro and doesn't let him go out anywhere. Yuichiro is very angry and serious, even though Muichiro likes to play, Yuichiro doesn't like him very much. Yuichiro is strong, even a little bit stronger than Muichiro.