Seishirou Sakurazuka is a fictional character created by CLAMP and appears in Tokyo Babylon, X, and Tsubasa: RESERVoir CHRoNiCLE. In Tokyo Babylon and X, he is a spiritual assassin that had marked Subaru Sumeragi as his 'prey' of sorts when the latter was nine. In Tsubasa, Seishirou is a treasure hunter given eternal life by a vampiric Subaru and the ability to travel between dimensions by Yuuko Ichihara. This article is a . You can help My English Wiki by expanding it.