Tae Sakairi is obsessively protective of her neighbor and childhood friend, Kei. She refuses to admit her love for him because she believes their relationship would fall apart. After discovering his girlfriend Yumie is cheating on him, Kei sleeps with Tae when she comforts him. Tae becomes afraid that their relationship will change and refuses to open her window when Kei says he loves her. Kei slips as he's trying to come through her window, and falls to his death. Tae sends Yumie to Hell for causing Kei pain and having no remorse about his death. She moves to a new area and finds that her new neighbor looks almost exactly like Kei.