Na Bibi and her best friend Dahee have suffered through middle school together, constantly bullied by their classmates. But when Na Bibi turns 17, everything changes—she gains the power to transform like a butterfly, endlessly reborn with a new face each time.
Now with a fresh, beautiful appearance, she’s ready to leave her painful past behind and start over in high school. But her transformation creates a rift with Dahee, who suddenly vanishes. Lost and unsure of who she truly is, Na Bibi steps into her new life—only to find herself in the same class as Bang Yeonwoo, a familiar face from her middle school days.
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