However, the theory that seems most probable is that Yoshimitsu in fact studied under Tokimitsu, and Tokimoto was the one who proceeded for the battle, who was one generation prior to Tokiaki as determined by his birth year, and the battle occurred at Osaka no Seki (the Osaka Barrier) rather than Mt. Ashigara.
しかしながら、時秋の生年などから、実際に義光が師事したのは時光、戦場に赴く際に別れたのは時元と一代ずつ前であり、またその場所も足柄山ではなく逢坂関であったとする説が現在では有力である。