OBA-116 The glimpse of the aunt's armpit, Yuko Kuramachi

Shinji, who lives with his mother after losing his father. One day, his mother is hospitalized due to appendicitis. Shinji finds himself living alone for a while. But before he knew it, his aunt Yuko came to check on him at home. She efficiently hung up the piled laundry and tidied up the dishes on the shelf. Shinji was captivated by her. No, to be precise, he was captivated by Yuko's 'armpits.' Unable to stop thinking about his aunt's beautifully clean 'armpits,' Shinji...