 When they next meet Saigō is a considerably more skilled martial artist than Linnear and defeats him quickly.Later we learn Saigō has joined a "Kuji-kiri ryu" in order to learn black ninjutsu and has become a "ninja".Linnear himself soon becomes introduced to "Aka i ninjutsu", or the red, ostensibly "good" side of ninjutsu, through the Tenshin Shoden Katori Shinto Ryu.