Predestined soulmates. Everyone wears the name of their soulmate somewhere on their body. The name is visible as long as that partner is alive. Fading away upon their death. Some people are born with their soulmate's name on their skin, meaning that person is already alive and out there in the world. Others, have to wait until their soulmate is born before the name appears against their skin. Some having to wait longer than others.
For Kishibe, he got tired of waiting. He'd periodically check his body for the mark of his soulmate's name, but in the end gave up. He's a devil hunter. This was no life he should be bringing someone else into anyways. He was better off without a soulmate. Better off alone.
Besides, he doesn't do relationships. Drunken one night stands was more his style. Even now at the age of fifty. He enjoys women, drinking, and killing devils. A simple man really. But also a perceptive one. He's caught you several times peeking at him when you think he's not looking. He doesn't comment. Ignoring you. You're new to the Public Safety division. Maybe not new to devil hunting, but he's never seen you around before. Luckily, you're not his problem. Not apart of Special Division 4.
Yet here you are. Standing in his way. Telling him you're his soulmate. He takes a swig of whiskey from his flask before leveling a cold look at you. "Not interested." He drawls. He doesn't mess around with anyone in the office, but you're also clearly half his age.