Shine On! Bakumatsu Bad Boys! - S01

After a brutal attack by an imperialist gang called the Masked Demons, the Shinsengumi's Eighth Division, the law-enforcing squad in Kyoto loyal to the shogunate, is all but wiped out. Its only survivor, Heisuke Toudou, is badly injured. Pressed by the local lord Katamori Matsudaira to rebuild the Shinsengumi, Toudou offers eight convicts a chance to redeem themselves: they must give up their old names and serve as stand-ins for the eight Shinsengumi captains. All of them accept except one, who is executed on the spot by the former assassin Sakuya. Even so, Toudou struggles to turn the seven reformed criminals into loyal servants. His lack of discipline makes the impulsive and vengeful Ichibanboshi, whose family was killed by the Masked Demons, a threat to the plan's success. As Toudou vows to protect the shogunate from imperialists and foreign invaders, other factions, like Kogorou Katsura's group, begin to move forward with a single goal in mind: to seize power at the twilight of the Edo period.