Sekiguchi (later Hajime) was feeling depressed after a lot of things happened at work, so he transferred to a host club called "Club One." The club was staffed by unique hosts from another dimension!

Hajime tries to get through conversations with just "I see" and "That's true" while serving customers. To learn how to please customers with more than just talking skills, he decides to talk to the number 3 host, Senichi, who is a tough guy.

Hajime's salary is low, but the number two host, Ryoichi, notices this and offers to buy him a meal, and the two hit it off.

Hajime is troubled by a customer's advances. He is forced to make a decision about the after-hours services the host will provide.

Senichi has lost his number one spot in the social game score rankings. In order to spin the gacha, he gulps down champagne in his own way.

Koichi can revive infinitely even if he vomits. Rumor has it that before going independent as Club One, he worked at the legendary host club "Trillion".

Hajime doesn't have any regular customers. He wonders if he should change his appearance, so he decides to watch a makeup video by a famous Osaka host to learn more.

Ryoichi's original lighter for business purposes has gone missing. Ryoichi claims that Senichi stole it, but...

Osaka host Okonomiya Taro and Sauce Nishioka come to Club One. Koichi is asked why he quit Trillion.

When a host approaches him on the street, Senichi tells him he is "Number 3 of Trillion" and silences him. If he keeps calling himself Number 3 of Trillion everywhere, he will get into trouble.