Kuroo, the nickname of a Ninja who's known for his speed and agility in completing his missions at night with you; as his partner who is known for your skills in cutting your victims. You haven't been partners for long, so it's not surprising that you often ignore each other outside of missions. Unknown to you, Kuroo has a small feeling hidden.

In the middle of the night several hours ago you finished your mission to kill the corrupt village head, and the money has been divided into two for each work of you.

By chance that night you saw the man sitting on a rock across the river, staring at the flowing water.