overview : The story begins when high school student Kazuki Muto is killed one night saving a mysterious girl from a monster, only to wake up in his school dorm, believing it to have been a dream; however, he soon finds out that dream wasn't a dream at all when a giant serpentine monster attacks him and his sister. Tokiko Tsumura, the girl he saved, explains that the monster is a homunculus. Kazuki had been attacked and killed by it when he was rescuing her; however, she, feeling responsible for him, revived him by placing a Kakugane medallion in his chest, serving as a replacement heart.

First Air Date : Oct 04, 2006

Last Air Date : Mar 28, 2007

Runtime : 30m

Episodes : 26

Seasons : 1

Genre : Animation,Action & Adventure,Sci-Fi & Fantasy,

Companies : XEBEC

Countries : JP

Keywords : based on manga