The manga centers on high school student Seiji, who once had the bad luck of falling down a well and stepping into the underworld in his childhood, and has since been cursed with bad luck. He has always been near danger, making everyone afraid to get close to him, with the exception of his one friend from childhood, Haru. When something he brought back with him from the underworld begins to activate, his life takes a strange turn.
(Source: Anime News Network)