Hokusou Shinsengumi
No Manga Chapter
From World of Creation and Covenant of Darkness:
Featuring a later period of the Shinsengumi, it starts as the Bakumatsu ends, and is about the remnants of the Shinsengumi that fought during the Boshin war. Divided into three sections, each of which deals with one of the leading characters, first Nomura Risaburou, then Souma Kozue, and finally Hijikata Toshizou.