For Yui, whose body had sagged and confidence waned, daily masturbation had become a routine. Such was Yui's resolve to regain her past glory by joining a fitness gym. However, her true intention was the hot trainer. The trainer's guidance involved exercises that were almost obscene. Gradually, their actions escalated into dildo squats, stretch fellatio, and live penetration squats, as Yui and the hot trainer began their secret lessons…
