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~ MANGA INFORMATION ~
Year: 2009-2011
Length: 7 Volumes (29 Chapters)
Categories: Action, Drama, Ecchi, Gou-Dere, Psychological, Romance, Seinen, Supernatural, Yandere
Mangaka: IM Dal-Young (Story) | LEE Soo Hyon (Art)
Publisher: Media Factory (Serialized in Comic Alive)
Scanlators: Imangascans | Simple Scans | Muda Scantrad
~ SUMMARY ~
Reiji is your typical high-school student living with his big sister Ayaka. One day he stumbles upon a pair of bracelets on the sidewalk. He picks them up and tries to find the owner, but gets sidetracked as a bag snatcher runs his direction. He tries to stop him but is stabbed and killed.

On the brink of death, he hears a voice from the bracelets say, "If thou wishes to live, form a contract." What has Reiji gotten himself into? And what exactly does the contract entail?