The brother of an up-and-coming kendoka is mysteriously murdered while working on a new model of motorboat.
as Kenji Hoshikawa
as Saburo Ohinata
as Mari Takakura
as Shizuko Inagaki
as Hideki Inagaki
as Iwakichi Mori
as Yusaku Amemiya
as Mankichi Yamaarashi
as Michiyo Amemiya
as Kikuko Ohinata
