Stepmother Sakura, having remarried her ex-husband, quickly grew close to his son, treating him like her own and living together as a true family. She soon gave birth to a long-awaited baby, pouring all her love into the child and cherishing each moment as she watched over him. But driven by a desire to monopolize her affection, the son begins seeking intimate nights with Sakura... A delicate and heartbreaking story deeply exploring the bonds and conflicts within a family.