According to the official website, an OVA of Itsuka Tenma no Kuro Usagi was announced to be bundled with the ninth volume of the novel.
An animated crossover between Itsu-Ten and The Legend of the Legendary Heroes (Densetsu no Yuusha no Densetsu or DenYuuDen) fantasy story.
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Characters
Himea Saito
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Taito Kurogane
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Mirai Andou
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Gekkou Kurenai
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Haruka Shigure
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