Giri/Haji

The nephew of the head of one of the Tokyo crime families has been killed in London. Moreover, he was killed with a katana that once belonged to the leader of the rival yakuza clan, Fukuhara. Fukuhara himself and the head of the Tokyo police send detective Kenzo Mori to investigate, since his younger brother, allegedly dead, stole this very katana and is now considered the main suspect. Detective Mori arrives in the British capital undercover, and he needs to find the killer as quickly as possible, since not only the fragile peace between the Tokyo yakuza, but also the safety of his own family depends on it.