Average young girl Kazuki Suou lived a peaceful life with older brother Masaki. That is, until she met Shirou Kusanagi, a boy with secret knowledge of her past, and the dark contract Kazuki was a part...more

Average young girl Kazuki Suou lived a peaceful life with older brother Masaki. That is, until she met Shirou Kusanagi, a boy with secret knowledge of her past, and the dark contract Kazuki was a part of in a former life.