After losing his father, Shinji lives with his mother. One day, his mother is hospitalized with appendicitis. Shinji ends up living alone for a while. But just when he thinks that, his aunt Yuko comes to the house to check on Shinji. Shinji is entranced by Yuko's deft hanging out the laundry and arranging the dishes on the shelf. No, to be more precise, he is entranced by Yuko's "armpits." Shinji can't help but be drawn to his aunt's beautiful "armpits"...