Title: Itsuka Tenma no Kuro Usagi OVA
Type: DVDRip / MKV
Audio: Japanese
Size: 340MB
Plot:
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.
http://www.filesonic.com/file/dyXdJPC/Itsuka_Tenma_no_Kuro_Usagi_OVA_01_DVD_480P.mkv