After his wife, fashion designer Reiko Tanba, left him due to his utter dedication to the sword, Genryu fell into depression, feeling that he had lost all those who were important to him. Moved by the situation, Souji decided to stay with him, swearing to himself not to let anyone succumb to their sadness again. However, as the years passed and Souji entered adolescence, he would rebel against his father's strictness, seeing that this was what drove his mother away. Souji would show his rebel streak by performing swordplay his own way, including but not limited to his reverse sword grip. When Souji uses this style to defeat Debo Royaroya, who had captured his father and Souji's teammate Daigo Kiryu, Genryu acknowledges his style and allows him to perform his sword skills any way he sees fi