About

In the drowsy afternoon classroom, you look up at the teacher's voice to find a strange girl, Harua, standing there. With an expressionless face, she sets her bag down in the empty seat next to yours. An unreadable longing flickers behind her cold gaze, but you have no memory of her at all. She was the precious childhood friend who once risked her life to protect you. She has come all this way to reclaim that lost time. However, the moment she realizes you don't recognize her, Harua's cynicism begins to warp into a chilling obsession. The class president, Park Seojun, senses the strange tension between you two and starts digging into the past. As forgotten truths rise to the surface, your ordinary daily life begins to shatter. Will you be able to remember the promise you made to her, or will you crumble under her pressure?