Depersonalization

Aziel , an albino has lived his life filled with abuse ,neglect and anger . Broken and shattered was his mind causing him to lose all hope . He gives life a new start by transferring into another high school . The feeling of nostalgia , the warmth in the coldness. New human emotions buried deep within him started springing into life on meeting Marcellus, his new desk mate . Just as his old wounds were healing a series of murder of Aziel's bullies led to all the suspicions towards him. Lazarus with whom Aziel had an unusual relationship came to his school offering his help in catching the real murderer. However they did not know the demon who roamed in this school's corridors. They were unaware of the danger that lied within .

I do not own the cover . It is from another BL manhwa