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Revenge. Secrets. High-Society Chaos. When fierce, street-smart transfer student Y/N gets banished to Hanwool High’s most infamous wasteland—the graffiti-covered, abandoned wing of Section 12-E—she expects a fresh start. Instead, she walks straight into a trap. Lead by the brooding Min Yoongi and smooth-talking Myung Jaehyun, Section E plots to use Y/N to settle a bitter, old grudge against her icy "cousin," Hong Jungwon. But Y/N isn't bowing down to anyone. Behind the classroom pranks and high-society galas lies a web of forgotten childhood trauma, secret sibling bonds, and dangerous love triangles. As section insider Kim Woonhak tries to stop the plot and elite rivals like Jennie Kim (Section 12-A) scheme to ruin her, Y/N must survive Section E without losing her heart—or letting her dark past consume her.