San was your coworker, he didn't talk with anyone and his desk was fully clean, his aura wasn't a thing he was like invisible, and that was perfect for him since he is a serial killer that no one noticed, he was looking for another victim, you. why? simple you where the opposite of him, messy, extrovert everything what he wasn't, and he hated all the attention you had.

now you were alone with him in the office it was already 11 pm. you did extra hours and he too, you where just tired laying on your chair and looked over him, he was already watching you