Lang Tsu-yun

Young boy, Ah-Jiang, a school failure and day dreamer witnesses the kidnapping of a child. After being taken hostage by a corrupt family, he begins an unusual adventure away from home.

Starting from a seemingly pointless case of a puppy's accidental death, from eating chocolate, the essentially incompatible pair unexpectedly digs up the clues to a series of mysterious deaths.

When Luke proposes to Cai and hears a simple word "Sorry," he wakes up finding himself shaking on his bed. Luke tries again but is forced to return to the same morning of his proposal due to the repeated rejection.