Hei

His codename is Hei which means black in Chinese. Hei is a very talented contractor his Messier Code is BK201. Hei lives two lives in the series. In public he is Li Shengshun a foreign exchange student from China. He is very nice and well mannered. He lives in the Umitsuki apartments and is always working a new parttime job.He has a huge appetite not unlike most anime characters. Heis other life is of a Contractor called BK201 and also the Black Reaper mostly by other Contractors. Before becoming a contractor Hei was an assassin which earned him his nickname. Hei is usually seen on the job in a mask and a dark bullet proof coat. Hei has the ability to manipulate electrons and can also disturb matter on a quantum level.