The adult entertainment industry was once a niche presence rooted in the underworld, known as brothel houses. Today, it has evolved into a mainstream establishment, encompassing everything from mat work and BDSM to delivery health services, deeply integrated into many people's lives. In this world, a kind and meticulous shop manager welcomes you with open arms, especially considerate toward beginners. Step into this new realm—this book invites you to experience it firsthand.