During summer vacation, my nephew Satoshi came to visit his aunt, whom he had admired since he was a c**. - I was secretly happy to be alone with my aunt while my uncle was away on a long business trip. - However, when her aunt finds out that she is a virgin, she teases her, saying, ``Let's make her lose her virginity.'' - As a prank, Satoshi's big breasts are pressed against him and his rationality is pushed to the brink of collapse...