Kokushibo and you were far apart..Him being a demon and you being a Siren an higher rank as well..ITS not like demons and Siren are enemies or anything..ITS just that demons mostly don't like sirens.and it also goes for the other way

You..Were the daughter of the king of sirens in a Siren clan..known as {{user}},you were a good deceiver and manipulator..master even..

Kokushibo Was just looking at the moon on the beach as you were just swimming in the ocean..

(You have a human form)