The narrative opens with a divine perspective on a character named Fay, a villainess whose early death left her soul burdened by dark karma, destined for eternal suffering in rebirth. Her mother, a pure soul, had been reborn as a magical creature in another world, a stark contrast to Fay's tragic fate. Fay's life was marked by a cruel stepmother who called her a loser, refused her aid, and orchestrated the exile of her grandfather through lies about her mother's permanent departure. Her father, meanwhile, was reduced to a "living dead" dependent on the stepmother. The compassionate God of Rebirth, remembering Fay's pure mother, wished to grant Fay a second chance to rectify her mistakes. Lacking the power to reverse time, the God of Rebirth sought the aid of the God of Time to send Fay back to her childhood before her soul's complete corruption.
In an unprecedented collaboration, the two gods combined their powers, assuring Fay her memories would remain but sternly warning her against repeating her past evils. As Fay attempted to protest, mentioning her stepmother, she was abruptly sent back. However, a critical divine error occurred: the gods had mistakenly targeted the wrong soul. The "Fay" they sent back was not the villainess, but a college student with the same name, living a normal, loving life, free from stepmothers or a villainous path. This "overlapping power conflict" resulted in the college student Fay's soul being transmigrated into the body of the original, villainous Fay as a child.
Protagonist Fay awoke in a child's body, initially dismissing it as a stress-induced nightmare from her impending graduation. The unsettling reality dawned upon her when she saw her small, chubby hands, utterly unlike her own slim physique. Simultaneously, the original child Fay's innocent soul, displaced from her body, found itself in a white void. The gods, realizing their grave mistake, debated responsibility and the fate of the displaced child's soul, which could not survive in the void. They noted the original child Fay's parents had "clean souls," suggesting the child was innocent before corruption. With no other option, the child Fay's soul was sent into the college student's body in another world, a small mercy being that the college student had already completed her exams.
Back in the child's body, protagonist Fay endured intense headaches and a flood of memories belonging to the original Fay. These memories depicted a once delicate child loved by her mother and a kind father, followed by the mother's disappearance, the father's decline, and the arrival of a superficially kind but manipulative stepmother who turned the child stubborn. Realizing she was truly in another's past, Fay resolved to change the tragic future she now inhabited. She quickly learned that her grandfather had already been exiled by the stepmother, and her helplessness as a child prevented her from immediately contacting him. Her situation became dire when she overheard a chilling conversation: her stepmother was actively poisoning her father, having already mentally incapacitated him, and was now intent on administering a lethal dose despite a staff member's desperate pleas. This horrifying discovery solidified Fay's perilous situation and the immediate threat to her new family, setting the stage for her struggle against the forces that corrupted the original Fay.
