This story takes place during the Bakumatsu era in Japan. Japan’s history looked bleak during this time, and many passionate men fought over hegemony within the country, various ideals in their hearts. Shinsaku Takasugi, a samurai warrior from Choshu, attempts to sneak onto a ship run by Yoshinobu Tokugawa, his partner Kogoro Katsura at his side. Takasugi and Katsura aim to steal a legendary treasure that is said to have the ability to control time: the pocket watch “Jishingi.” However, the moment they obtain the watch, it is stolen from them by a woman dressed in black.

[Source: Crunchyroll]

The chronometer is a legendary treasure that has the power to manipulate time.

The Susanoo Incident unfolded in the capital of Kyoto and ended with the death of the masked shogun, Mugensai.

Having finished visiting the grave of his former master, Yoshida Shoin, Takasugi Shinsaku and his partner, Katsura Kogoro, return to Kyoto once again.

Suddenly, the earth trembles and the sky splits open, and the chronometer, which was supposed to have been destroyed, appears from a rift in space-time.

Now with a will of its own, the chronometer starts going on an uncontrollable rampage!!

[Source: Crunchyroll]