Tae Sakairi (坂入 多恵, Sakairi Tae) is obsessively protective of her neighbor and childhood friend, Kei Tadaka. She refuses to admit her love for him because she believes their relationship would fall apart. After discovering his girlfriend Yumie Hanamura 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 