Kosuke went to his friend Tetsuya's house for the night, where he met Tetsuya's mother, Rei. She unabashedly displayed her voluptuous figure, approaching him without any defenses, making Kosuke unable to suppress his excitement… Rei noticed Kosuke's gaze, and unable to suppress her sexual desire due to her husband's long business trips, she decided to take advantage of him. However, no matter how many times he ejaculated, he wouldn't stop… Initially, Rei enjoyed that never-ending penis every day. However, with her insatiable lust, her body eventually let out a mournful cry…