いつか天魔の黒ウサギ
A light novel series by Takaya Kagami, with illustrations by [[Kamiya Yuu]]. Also adapted into a 2011 anime by Zexcs and four manga series. 

* Serialized in Fujimi Shobou's [i]Monthly Dragon Age[/i], with illustrations by [[Asahina Shiori]] 
* Serialized in Kadokawa's [i]Shounen Ace[/i], with illustrations by [[Imada Hidfehito]] 
* Spin-off manga serialized in Kadokawa's [i]Comp Ace[/i], with illustrations by [[Edoya Pochi]] 
* [[4koma]] manga serialized Fujimi Shobou's [i]Monthly Dragon Age[/i], with illustrations by [[Tani Takeshi]] 

h4. Characters 

* [[Andou Mirai]] 
* [[Kurenai Gekkou]] 
* [[Kurogane Taito]] 
* [[Saito Himea]] 
* [[Shigure Haruka]] 

h4. External links 

* "Official Site":http://www.itsu-ten.jp/ 
* "[i]Itsuka Tenma no Kuro Usagi[/i] on Wikipedia":http://en.wikipedia.org/wiki/Itsuka_Tenma_no_Kuro_Usagi
itsuka tenma no kuro usagi