Living secretly with her brother during their honeymoon days, Umi enjoys a sweet secret relationship that is shattered by Repe. A close sibling relationship where they secretly seek each other's bodies every night is torn apart by a single man. Umi, the sister who was raped, cannot confess the truth to her beloved brother and keeps it bottled up. Despite being manipulated physically many times, her body, contrary to her feelings, becomes sensitive. Although Umi was on the verge of giving up, she struggles within the Repe to reclaim her honeymoon days with her brother.