A reverse roles AU. After nearly running over Park SooHa Hye Sung becomes his guardian after finding out his parents were murdered and the killer Min Joon Gook wants to finish what he started. Hye Sung vows to protect the teenager SooHa still has his mind reading ability.

…that you'll always be mine. /post-series/

Because spending ten years of your life training to protect someone, becoming each other's family and safe place, learning to work as a team, and loving someone so much you'd be willing to die for them are obviously not solid signs you'll be together forever. [Twelve Shots of Summer: Trinity Limit]