ADN-278 The delivery guy became sexually excited when he saw the owner and the hostess having sex with her husband

When I made a delivery to a familiar house, I heard an obscene voice leaking out even though it was midday. There was no doubt that it was the voice of Manami-san, the person I secretly loved. Even though I thought it was wrong, I still peeked at Manami-san who was panting as her husband poked her roughly. At that moment, Manami's eyes met.