Ex-hitman and an employee at the Sakamoto's Store. He is an old partner and former student of Taro Sakamoto. After failing to kill Sakamoto, Shin joins him and his family. He is a clairvoyant. He typically remains calm and composed even in serious situations, though this occasionally can be broken by comical bouts of anger, irritation or fear from mundane stimuli. Shin is confident but is not arrogant and remains analytical in fights. He has immense determination and willpower. Caring.