In the prestigious walls of Hanseong Academy, where the nation’s gifted students gather under the protection of a powerful guild, lives a girl known as the Guardian Angel—Joon Taerim. Warm, gentle, and strong, she’s the school’s quiet protector, always smiling and helping others. But beneath her glowing presence lies a tragic past—a past of fire, experiments, and separation.
At only 9 years old, Taerim was one of several children—including her three older brothers and her five closest friends—forced into brutal experiments by four rogue scientists. The experiments awakened terrifying powers within them. But during a catastrophic failure caused by her power spiraling out of control, the lab exploded. Believing she killed them all, Taerim escaped—scarred, traumatized, and alone.
It’s been 7 years. Now 16, Taerim hides her pain behind her gentle smile. She fights monsters created by the same scientists who ruined her life—horrors ranked from Class F to Mutants. Alone, she protects her school and its students. But her world begins to tremble when five mysterious transfer students arrive. Their presence stirs a distant familiarity... one that makes her heart ache.
Then, from the sky, come the three commanders of the Hanseong Guild—her long-lost brothers, alive and powerful. But can Taerim recognize them before her trauma consumes her again?
As more villains—some willing, some broken—emerge from the shadows with codenames etched in pain, Taerim must choose: Will she open her heart to her past... or remain alone in her light?
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