J.B. and Roy work together as professional problem solvers in an illegal manner. While J.B. is skilled in sniping from afar, Roy can handle most issues through hand-to-hand combat. They have been living in one location for some time under assumed identities. When Roy becomes involved in local issues for legitimate reasons, J.B. quickly departs from the country to avoid being targeted by law enforcement. This situation becomes even more complex due to Sara, a friend of J.B., requesting assistance at the same time.
In 1989, Kodaka made her debut as an author with Sessa Takuma! in Shounen Champion, which was a shounen manga series. However, after she stopped writing shounen manga and began publishing Sessa Takuma...