I was suddenly transferred to a faraway place, so I decided to live for a while at my aunt Yumi's house, who lives in the neighborhood where I was transferred. However, Yumi was very serious and her job as a nurse meant that she was always stressed out, so she was always on edge. But one day, I witnessed my aunt after her night shift, completely absorbed in her vibrator! I couldn't stand the unimaginable lewd behavior from my usually clean and strict aunt...