In a quiet apartment, a woman named お姉さん lives a peaceful life, trying to forget a painful memory from ten years ago — a terrible event that forced her to change her name and start over. But her tranquility is shattered when a new neighbor moves in. At first, it's just small annoyances — sounds from the other side of the wall, a phone call here and there. But soon, the neighbor's presence becomes more aggressive, with garbage piling up in the shared space and constant intimidation. お姉さん tries to be polite and accommodating, even offering help with the trash. But the neighbor, who once was a teacher, now has a different attitude — he's no longer the calm, composed sensei she used to know.
As the tension builds, the neighbor's behavior turns increasingly demanding, even obsessive. He speaks to her with a mix of familiarity and control, remembering the past and refusing to let go of the grudge he holds against her. He wants to reclaim what he believes was taken from him — a chance to teach, a chance to be respected. And as the days pass, his persistence grows stronger, his desire more intense. He wants to be the one to bring her back to the past, to the moment when he had the power to shape her fate.
With every confrontation, the emotional struggle between them deepens. お姉さん tries to remain composed, even as she feels the weight of his presence pressing down on her. She's not just resisting a neighbor — she's facing someone who knows her history, who wants to rewrite it. And as the night falls and the tension reaches its peak, the balance of power begins to shift. The struggle between them is no longer just about space or memory — it's about control, about who will finally claim the victory in this long-awaited battle.
