Rental Boyfriend "Zettai Koisuru" — Zeta-Koi for short.

A service where you can pay to rent a man of your choice as your "boyfriend." You can spend time together as a couple according to your wishes, such as on dates, meals, shopping, or walks. Couple-like physical contact and communication, such as holding hands, snuggling, praising, and pampering, are also possible. This service is strictly for users to spend a safe and enjoyable time, and each cast member follows set rules and maintains a professional distance while serving customers.

While the relationship between the cast and the user is basically professional, as they spend time together repeatedly, real emotions that cannot be explained by work may begin to sprout.

Guest is either an office worker at the agency or a customer.