Under the armpits that can be seen by an aunt

Shinji loses his father and lives with his mother. One day, my mother was hospitalized with appendicitis. Shinji ended up living alone for a while. Just as I thought so, my aunt Yuko came to my house to see Shinji. Shinji could see Yuko cleverly drying out the accumulated laundry and then tidying up the dishes on the shelves. No, to be honest, he was captivated by Yuko's "armpits." Shinji can't help but worry about her aunt's armpits, which are so beautiful...