Saki no Mizuki's third release as a Max-A exclusive actress takes on the challenge of solving the mystery of whether she can achieve internal orgasm. In her first video, she learned to climax by having a vibrator applied directly, gradually becoming aware of the sensations. In the second, her sensitivity was heightened through cunnilingus and handjobs, then pushed further with slow-paced intercourse and stimulation of the A-spot, driving her arousal to the maximum. In this final stage, her deepest erogenous zones are targeted with intense focus. The climax arrives with relentless thrusting, subjecting her to the most vigorous sex she's ever experienced, testing whether she can finally achieve internal orgasm. All eyes are on whether Mizuki will break through this ultimate barrier.