My knowledge in Japanese samurai films is a bit narrow, but I'll take the chance to draw a parallelism between east and west cinema that could sound blasphemous or stupid to somebody who knows more about it. But I suppose, if westerns had John Ford as a traditionalist filmmaker and Sergio Leone as a revolutioner who shattered that sanitized and mythic image and made it dirty and unheroic, I could apply that same logic to samurai films of Akira Kurosawa and then to what Kenji Misumi accomplished in this first chapter. I guess that shallow explanation could serve a newcomer to picture what kind of brilliant and bloody action film they'll find here. also judging from the bloody fight scenes its clear where Tarantino got his influence for his Kill Bill films.