Mother Mitsuuki raised her only son Akira all by herself. When she learned he recently got a girlfriend and saw him happy, her heart warmed with joy. However, ever since Akira started dating, he began avoiding her. Hurt by his distant behavior, Mitsuuki's affection grew even stronger—she sought a deeper, unbreakable bond that a young girlfriend could never fulfill. Desperate to reclaim her son's heart, her longing intensified beyond control.