Streaming: Crunchyroll
Episodes: 12
Source: Original
Episode Summary: In the Bakumatsu era, the Shinsengumi were nearly wiped out by a mysterious group of masked foes. In order to help defend the local populace against these enemies who seem to have some connection to the Shogunate, Todo Heisuke, the one Shinsengumi member left standing, kidnaps a group of death row inmates and provides them with a choice – either join the ailing Shinsengumi by “becoming” its lost members, or be executed immediately.
Most of the criminals choose to take on these new roles. Among them is Ichibanboshi, a brawler with a laser-focused desire for revenge. When he discovers that his personal goals align with that of the Shinsengumi, his decision to join them is an easy one. Unfortunately his brash attitude and unique fighting style leave something to be desired within an organization that prides itself on its swordplay. Yet, when he encounters one of the masked Ronin about to raise his sword against an innocent family, Ichibanboshi is able to draw from the power of the Shinsengumi he now embodies to dispel the strange, malignant forces controlling the Ronin.