Concept Cafes (Con-Cafe) are places where girls with idol-level looks entertain guests over drinks. Naturally, sexual acts are strictly forbidden. However, with over 800 shops in Tokyo alone and a failing economy, sales are plummeting. The key to survival is finding a "Savior"—a whale (big spender)—and making them your "Oshi" (favorite). To secure their biggest customer, these girls team up in pairs to target the protagonist, engaging in forbidden erotic acts that are banned in-store. A dream-like true story where the hustle for sales leads straight to the bedroom!?