夜桜四重奏 〜ツキニナク〜

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"Tsuki ni Naku" will take the story content from volume 11 of the manga, which features a visit to a onsen by the members of the Hiizumi Life Councelling Office, while the town's police force have to deal with a new youkai-hunter threat. This OVA is bundled with the limited edition of the manga (14th, 15th, and 16th).