Adopted Soldier

Raised as the perfect weapon, Alexander became the youngest S-rank mercenary—only to be forced into retirement by his adoptive father. Now his new mission: enroll in a public high school and secretly protect a girl. With a flawless 100% completion rate, Alex accepts. But battlefield tactics don't work in homeroom. When he calls to request permission to threaten the principal into switching classes, his father’s response is a flat “DENIED.” Follow Alex’s awkward, almost comedic struggle as a lethal soldier navigates lockers, lunch breaks, and teenage chaos—one mission he never trained for.