Moutoku Sousou was a common fighter who was bullied as a child. He and Chuukou Kyocho went to the same dojo where Kyocho stood up for Sousou when he was bullied. One day, When Sousou came to the dojo, he found the other male students molesting Kyocho for being a tomboy and standing up for him. This triggered Sousou's first dragon awakening ending with him killing the rest of the students. Also at some point, Sousou killed Bunyaku Kansui and caused Mouki Bachou to seek vengeance against him.