[Crimson (Crimson)] 24-Jikan taikyuu eromassaaji ~ Mune no ouki-sa ni nayamu joshi rikujou senshu ga hamerareta wana~

Ryuukawa Chihaya is a driven college sprinter desperate to shave 0.1 seconds off her time, so when her intense training leads her to a 24-hour endurance massage, the tomboy athlete never suspects the trap waiting for her on the table. What starts as treatment quickly becomes a lewd 'examination' of her big breasts under the guise of therapy, with wandering hands and a hidden camera capturing every reluctant gasp. As fingers dig deeper and her body betrays her with unwanted pleasure, she discovers exactly what her masseurs mean by 'endurance.'