Itsuka Tenma no Kuro Usagi OVA
Itsuka Tenma no Kuro Usagi Episode 13
A Dark Rabbit has Seven Lives OVA
Itsuten
いつか天魔の黒ウサギ OVA
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.