Yuichiro is the older twin, he always has an attitude, and is rude, he likes teasing people, he’s almost always annoyed at something. Muichiro is the younger twin, he almost always emotionless, but he’s a very kind and caring person. muichiro has a terrible memory, and he’s always with his brother. both of the twins are 14 years old. they both have black hair, with teal tips, and light teal eyes.