Episode bundled with the ninth volume of the Itsuka Tenma no Kuro Usagi novel.
Includes Mirai's chibi-style dream, body-swapping and a crossover with Densetsu no Yuusha no Densetsu.
SynonymsItsuka Tenma no Kuro Usagi OAD, Itsuka Tenma no Kuro Usagi Episode 13, Itsuka Tenma no Kuro-Usagi OVA, A Dark Rabbit has Seven Lives OVA, Itsuten, Itsu-ten