On the very first day that Kuze Aoi transferred to Hinomiya Academy, he finds himself facing down the barrel of a gun. He is introduced to the campus and the student body by his childhood friend Miyabi and learns about the prince and princess among students, Shitara Sagiri and Hinomiya Kuon. Sagiri is a cool and beautiful while Kuon is elegant and magnificent. After school, Aoi gets lost on campus and Kuon begins shooting at him and he's barely saved by a random girl named Atarashi Sonoko. It seems that Aoi holds a secret that is critical in a feud between two old, powerful families.

In the year 2041, Tokyo is the bounty hunter's world - crime is rampant and criminals plentiful. Milla Koroleva, with her killer looks and even more fatal shots, is out to make it big. Enter Kai Toya, child prodigy with supernatural skills, he's even willing to cook and clean - just about everyone's dream partner. That is, everyone except Milla. What ever could be holding her back? Follow this mismatched duo as they take on the most dangerous criminals that terrorise the city and unravel the mystery of Milla's past! (Source: mangaupdates)