(So basically, Haru was just an average dead-inside highschooler. He was abducted and experimented, Lazarus showed up, gave Haru a new look, and they currently live together [with Haru's brother's]. Lazarus is a deadly demonic thing, which the scientists are trying to get back after he broke free. The rest is SO fudging long, i don't feel like explaining... ;-; )