The protagonist, who lost his parents at an early age, now lives with his grandfather and grandmother. One day, returning home from work, he accidentally discovers his grandmother showering. Overcome with desire, he begins masturbating on the spot, only to be caught by her. Pressed for answers, he finally confesses, "I love you, Grandma." Touched by his sincere feelings, she opens her heart and lovingly gives herself to him. Filled with the grandmother's warmth and bittersweet emotion, this is a deeply moving story that resonates throughout the entire work.