Gay Manga I want finished

Mild blood/lighthearted/misunderstandings/SFW
Taeman has been a contract killer since he was a child, growing up to clean up the dregs of society that the police miss. In all that time, he’s never felt excited, until he meets actor Daekyung. The actor, however, finds Tasman’s aura/facial expressions fascinating and wants to study him. Some how, this leads to a very sweet relationship.