第1話: 新選組のアイドルが天の歌を歌い、京都は徳川幕府の平和を称賛する。

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The period is what would come to be later known as the end of the Tokugawa shogunate. Kyoto overflows with the "Heaven's Song" sung by Shinsengumi top idols, and the people sing praises of the Tokugawa shogunate's Song of Peaceful world. (Source: Crunchyroll)