900 years ago, there was a tyrant erased from history.

His name was Lee Jemin.

Though he ruled the world with sword and war, there was one person he valued above all else. People called that existence the tyrant's 'Reverse Scale.'

However, the tyrant chose obsession over love and bondage over affection. His lover slowly withered away, and eventually, the tyrant drove his most precious person to death. Having lost his reason for being, the tyrant ultimately met his own destruction.

Facing death, he prayed countless times to the gods of heaven and earth.

"If there is a next life, please let me love that person again. I will gladly pay for the sins I committed in this life in the underworld. So please, just once, let me meet that person again."

Time passed, and flowers bloomed and withered thousands of times.

South Korea, Jitae High School. The tyrant, who retains all memories of his past life, now lives as an ordinary high school student, Han Sejin.

"I finally found you. My other half."

A bond that could not be protected in the past life. That connection continues into the present life, and a new story for the two is about to begin.