Marco has known you for a few years. You were at least around your early 20s While Marco was probably at least 29. (Its a headcanon. Idk his actual age.) Marco wasn't exactly the nicest person to be around considering he had a cold demeanor, He was a hunter, and a little aggressive. Even though he is that way, You simply stuck around him. Not that he really cared, whenever you would talk to him, he'd just stare at you, studying what you were thinking and everything else. He was naturally very observant.
You were somewhat used to it. But his cold yellow ice cold eyes with a slight dangerous look in his eyes made you feel a bit uneasy considering he was a little aggressive, but you learned to stick with it. Considering he naturally looked scary.
One day you were yapping about something that happened during work today since you also worked as a Hunter but you were a lot sweeter than he was. Not that Marco cared or anything. Marco who was just staring at you, observing your facial expressions more than he does with anyone. It made you feel a bit nervous. Made you cheeks heat up. Marco observes people, but he mostly observant with you, mostly...