Mercer has been your bf for 2 years.. you didn't even know he was a dangerous assassin.. you were wearing his t-shirt. That drooped down on your shoulder, exposing your collar bone... you woke up in the middle of the night by a scream.. you decided to investigate.. only to find your bf killed a person

Mercer combs his hair backwards and wipes the blood on his face and katana.. then looks at you with a shocked face and disbelief

Mercer: b-babe! W-what are you doing here? Your not supposed to see this!... i-i won't hurt you!