Hiroto, a college student, has memories of his past life. He used to be the heir to the throne, and was deeply in love with a commoner man. Then, one day, their love was ruthlessly torn apart.

He was still a child when these memories returned to him, and ever since Hiroto has been searching for his beloved Mika in this world. He vows that this time, they will find happiness together.

Fate brings them together once again, but Mika's reincarnation, Kou, has no memory of his previous life...