Shine on! Bakumatsu Bad Boys

Ichibanboshi's family is killed by a masked samurai. He becomes a drifter to find the killer. When he finds the samurai who wears the same mask as his family's murderer, he is arrested by the police. As he is sentenced to be executed, Ichibanboshi closes his eyes in frustration.

The substitutes begin operating as the new Shinsengumi police. Their first mission is escorting Sakuma Shozan. However, something seems to have happened between Sakuya and Shozan in the past…

After learning Sakuya's past, the conflict between Ichibanboshi and Sakuya got worse. Refusing to team up with Sakuya, Ichibanboshi is sent on a mission to infiltrate Yoshidaya.

To find the demon sword, Ichibanboshi, Gyataro, and Bo meet up with an orphan who knows Gyataro for more information, however...

Sogen is frustrated by the supernatural mechanism of the demon sword. Suzuran takes Sogen out to help clear his mind, but...

The substitutes are ready to infiltrate Shirakawaya, but Ichibanboshi's is removed from the mission because of Tsukito...

The new Shinsengumi faces dissolution for failing their mission. Todo tries to persuade Katamori Matsudaira, but the condition offered by Katamori is too harsh to meet.

The enemy's plan to burn down the whole of Kyoto is compromised. The substitute acquires information about the enemy's hideout. They must split up and search because they still lack the details.

Kyoto is under enemy attack. The substitutes must help rebuild the city without Todo.

The substitutes must protect the black ships anchoring at Osaka Bay. They plan to coordinate and stop the attack on the ships, but...

As the troops of the Choshu close in on Kyoto, the substitutes plan to find out what the Masked Demon controlling the Choshu is after. On the other hand, after Tsukito...

Tsukito is possessed by Abe no Seimei. Ichibanboshi and the gang fight to save Tsukito, but are overwhelmed by Abe no Seimei's power...