Souten no Ken: Regenesis

Shanghai is trapped between violent criminal factions when a young girl named Erika loses everyone who should have protected her. The martial artist Liu Fei-Yan takes responsibility for her, but death seems to follow every attempt he makes to place the child somewhere safe.

While trying to bring Erika to a man named Guise, Fei-Yan crosses paths with Kenshirou Kasumi, heir to the deadly Hokuto Shinken. Their meeting draws Kenshirou into a conflict involving powerful syndicates, hidden agendas, and a girl whose existence may matter far more than anyone first realizes.