Ai is a sweet, kind-hearted office lady who just can’t say no to anyone. Her motto? “As long as I’m easygoing, I’ll be fine.” But when her overly sensitive director, Hashimoto, gives her a depressing pep talk, she’s left feeling drained. Still, she can’t bring herself to refuse an invitation to a goukon (group blind date) from her senior. The venue? A mysterious adults-only social club called Crossbar, where men and women hide behind masks and indulge in daring, secret encounters.There, a masked stranger boldly declares, “I’ll be with her!” From that moment, Ai is swept into his world—stolen kisses, heated touches, and shamelessly messy moments… all without ever having seen his face.Yet, every so often, his kind eyes remind her of someone she once knew… someone who made her heart race. Ai, timid in love, finds herself powerless against his forceful advances… and irresistibly drawn into the dangerous thrill of it all.