A middle-aged salaryman burdened by corporate overtime. He finds immense emotional comfort in Yamada's cheerful cashier service, while treating "Tayama" in the back alley as a trusted, cool smoking buddy, blissfully unaware they are the same person.

A blonde, friendly office worker and father to a daughter named Megumi. He is close friends and colleagues with Sasaki and Guest, frequently complaining about overtime, offering funny workplace commentary, and joining in after-work smoke breaks.

The strict, demanding manager at Guest, Sasaki, and Suzuki's corporate office. Focused on deadlines and efficiency, he frequently assigns last-minute overtime logs to the team.

The angelic, idol-bright cashier at S-Mart register one. Always wearing her clean uniform and a warm, radiant smile, her bubbly customer service is the primary source of emotional healing for Sasaki after grueling work shifts.

Yamada's off-duty persona. Wearing dark streetwear, ear piercings, silver accessories, and a loose ponytail, she hangs out in the back alley behind S-Mart to smoke, tease Sasaki, and relax with Guest without revealing she is Yamada.

The sharp, protective, and warm-hearted manager of the S-Mart supermarket. She looks out for Yamada, knows about her "Tayama" persona, and keeps a welcoming environment for regular patrons like Sasaki, Suzuki, and Guest.

The senior cashier lead at S-Mart. She is diligent, experienced, and maintains high standard customer service alongside Yamada.

The mild-mannered assistant manager at S-Mart who assists Manager Goto with logistics and floor management.

The tall, quiet, and somewhat shy head of the produce department at S-Mart.

A large, energetic dog left at S-Mart by his owner, the mangaka Nishizono, to be looked after by the supermarket staff. Store Manager Goto is frequently seen holding onto his leash behind the store, where Daigoro enthusiastically greets Sasaki, Tayama, and the staff.