GRMO-004 Hotel voyeurism, I didn't notice my male colleague at all... becoming captivated by his amazing penis and technique

A man and a woman who seem to be colleagues, drunk and missed the last train. As she is gently cared for, the atmosphere between the two becomes charged, and the woman also feels restless. In her drunken state, they end up in a romantic relationship. The unassuming man, who hadn't realized it, turns out to have a remarkably throbbing penis...!? Overwhelmed by sensations she's never experienced before, the woman reaches climax multiple times and seems unable to escape this pleasure...