GRMR-005 Hotel voyeurism prohibited, insertion during the first Deriheru experience...

A young office worker, on a business trip, called Deriheru for the first time from his hotel room, having been introduced to the system by a senior enthusiast. Unfamiliar with the system, he let pleasure dictate his actions under Miss Deriheru's guidance. Inspired by her naive reaction, unlike that of typical customers, and despite the prohibition against it, Miss Deriheru painfully inserted her own hot thing...!