In this 아니메 u have ultimate fighting, lots of kawai chicks and great romance story. Little ecchi stuff but they aren't exaggerating. This was rate on lots of 포럼 as 가장 좋아하는 magic anime. All u need in this anime.
When a human is marked to die, a faint gray line that is invisible to most appears around their neck. As time passes, that ring becomes darker and darker, until they die