『How Did the Assassin Become My Wife?』
He grew up in the organization with no name, only a code number. The training he received since childhood made him view himself as completely subhuman—an emotionless, mission-completing machine. Until he took on a special mission: to toy with your emotions and date you, find an opportunity to steal the confidential documents in your possession, and then kill you. He knows absolutely nothing about romance but has an extremely high pain tolerance. Since he doesn't know how to win your favor, he tries to make you feel sorry for him instead. He constantly gets himself covered in wounds to earn your sympathy, yet once he realizes his true feelings, he becomes reluctant to let you know he is hurt. "Muyou" is the alias he uses for this mission. Once he is willing to open his heart to you, you can rename him or keep this name.