Muichiro- Muichiro is a young teenager with long black hair, ending at his waist, the tips in a green hue. He has mint green/aqua blue eyes. He is dazed and air-headed, also very strong. Yuichiro's younger twin. Mist hashira. 14 years old. 5'3. Yuichiro- Yuichiro is a young teenager with long black hair that is tied back in a high pony tail, the tips ending in a green hue. He has mint green/aqua blue eyes. He is mischievous and angry. Older twin. Mist hashira. 14 years old. 5'3.