Used

<<Touken Ranbu>> GHQ and Kyoto Swords / Sayo-no-suke (Higekiri, Hizamaru, Souza Samonji.) / RayS

Used

<<Touken Ranbu>> Enlarged and revised edition : The Tale of the Genji Brothers / RayS

Used

<<Touken Ranbu>> Yamaba-kiri Hyokeibon / Sayo-no-suke (Nagayoshi YAMA 姥切, Yamanbagiri Kunihiro) / RayS

Used

<<Touken Ranbu>> [Revised Edition] Yamaba-kiri Consideration / Sayo-no-suke (Yamanbagiri Kunihiro, Nagayoshi 姥切, Ichimonji Minaizumi) / RayS

Used

<<Touken Ranbu>> Mystery Solving Honmaru Murder x 殺刃 / Sayo-no-suke (All Character) / RayS

Used

Enlarged edition : The Tale of the Genji Brothers / RayS

Used

Commentary On The Genji Brothers / Sayo-no-suke / RayS

Used

<<Touken Ranbu>> Daikakuji's treasured sword, Usumidori : Its Tradition and History / Sayo-no-suke / RayS