Youngster Otsuka has started working at a convenience store, but worries about an eerie part-time worker.

Regular convenience store customer Mr Oda notices something unusual, and believes Mr Muto may be involved in the matter.

A manager worries about his convenience store's sales, but more than that, he has a secret that no one can discover.

Part-time convenience store worker Tabata is worried about her long-distance relationship with her boyfriend.

Part-time worker Mr Adam can't help but worry about something which only he's aware of: the true identity of Mr Muto.

Part-time worker Mr Muto does his job quickly and politely, and has a good reputation, but there's something more that he wants.