Midnight Gravity (K PROJECT FAN-FIC)

Jade Yata is a normal bounty hunter trying to make a living. Her life gets turned upside down when she gets a bounty on a boy named Yashiro Isana. Not knowing anything about her target when she should know, she goes after him. When she finds her "kill" has no reason to be killed, she backs off and goes into hiding for a short amount of time. Yashiro wants to know who this girl is and wants to find her after he finds her, their relationship blossoms. As this happens they each find out something unexpected about each other.