Is it really okay to tie you up? Yes, of course. You're free to do whatever you want to do. GEHEIM, the exclusive, invitation-only club, is the scene of yet another lascivious love affair again tonight. Hisaya, the dashing, princely dom; Akari, the intriguing masochist with a praise kink; Aoba, the guy with no hard limits but who suffers from erectile dysfunction... Kurou, the manager who keeps this band of colorful characters coordinated; and Shigeru, the black-suited support staff. Like their customers, they too have their own secrets and desires that are not always so clear-cut... The love story anthology by Senco Yoshimoto, which depicts the love and desires of three couples working in a high-class brothel, begins with a bang!