Hei

MyAnimeList Top 100 Favorite Characters (100 items)
list by Juuhachi18

Sovereign's Top 10 Manly Characters in Anime (16 items)
list by Sovereign DC

His codename is Hei, which means black in Chinese. Hei is a very talented contractor, his Messier Code is BK-201. 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 part-time job.He has a huge appetite, not unlike most anime characters.

Hei's other life is of a Contractor called BK-201 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.