Mother Ryoko is caught by her eldest son while being intimate with her younger son. This incident sparks a fierce emotional and physical rivalry between the brothers. However, Ryoko loves both her sons equally, embracing them with tender yet sensual affection. She strives to share her maternal love fairly between them. "Mommy will love you both equally. Come here, there's still room on this breast. Come closer..." she whispers, expressing her devotion.