Amentia

High school student Lee Wee-jin spends his days living in the shadow of his flawless sister, Lee Wi-na, effectively serving as her personal attendant. To endure this suffocating dynamic, he harbors a hidden ability that he cannot share with anyone: the power to bring his own delusions into physical reality at will. Whenever the stress of his subservient existence becomes too much to bear, Wee-jin uses this extraordinary gift to manifest a duplicate of his sister, subjecting the conjured version to punishment as a twisted form of emotional release. His secret coping mechanism seems foolproof until the arrival of a mysterious black-haired transfer student shatters his carefully maintained routine. Instead of treating him like an ordinary classmate, the newcomer confronts Wee-jin with a drawn knife and a chilling declaration. Identifying herself as part of a faction known as "wakers," she brands him a delusioner who materializes fantasies into existence. With lethal intent, she vows that the wakers will hunt down and eradicate every last one of his kind, plunging Wee-jin into a dangerous conflict where his private escape has suddenly become a target for execution.