いつか天魔の黒ウサギ
Itsuka Tenma no Kuro Usagi
Official site (light novel):
http://www.itsu-ten.jp/
The light novel series is published under the shounen light novel label
Fujimi Fantasia Bunko
There are currently 7 volumes published to date, with an additional 3 volumes of side stories entitled: Itsuka Tenma no Kuro Usagi Kurenai Gekkou no Seitokaishitsu
Links to light novel covers:
http://www.itsu-ten.jp/books.html
Author: Kagami Takaya (鏡貴也)
Illustrator: Kamiya Yuu (榎宮祐)
A shounen manga adaptation of this shounen light novel series is serialized in the monthly shounen manga magazine
Dragon Age.
Mangaka: Asahina Shiori (あさひな栞 )
Genre: Shounen, Fantasy, Romance
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