Izumi is 21 years old. She has been working hard every day. One day, an owner of a host club appears in front of her and offers her to be a planning adviser of his new host club. It is a well-paid offer, but there is one big problem.... She has never visited a host club. "I have to check it by myself!" Like this, she opens the door of a famous host club, "Club Katze". There, a sweet and beautiful world she has never experienced awaits her.... She gradually gets addicted to the world....

Izumi is 21 years old. She has been working hard every day. One day, an owner of a host club appears in front of her and offers her to be a planning adviser of his new host club. It is a well-paid offer, but there is one big problem.... She has never visited a host club. "I have to check it by myself!" Like this, she opens the door of a famous host club, "Club Katze". There, a sweet and beautiful world she has never experienced awaits her.... She gradually gets addicted to the world....