Yakuza Reincarnation manga volume 13 features story by Takeshi Natsuhara and art by Hiroki Miyashita.

Along the way to the Spirit World, Ryu and crew stop off at an elven settlement--taking a side gig as bodyguards while they're at it. Then who should appear but the devoted Princess Knight, Sir Isac Bruce? He wants to “atone for his sin”--words that strike a chord with Ryu.