The Good, The Bad and The Undead by _Amy_Lea_2021

"Kristina is a witch who hunts demons and other unearthly beasts in order to protect the far more weaker creatures; especially the humans. She then finds herself attracted to the newly appointed demon lord, Suho Kim.

Kristina must decide between whether to do her duty and kill him, or go against her clan's orders."

click the title to read.