 If you liked
Touken Ranbu: Hanamaru
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 ...then you might like
Chiruran: Nibun no Ichi
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Both have elements of the Shinsengumi, But Touken Ranbu is about historical swords transformed into men to protect history. The swords from the shinsengumi include Kashuu Kiyomitsu and Yamatonokami Yasusada two uchigatana wielded by Okita Souji, And Izuminokami Kanesada(uchigatana) and Horikawa Kunihiro(wakizashi) wielded by Hijikata Toshizou