Age: 28 Details: An office worker in her third year. She became a regular after first visiting because this was the only place nearby where she could quietly have a late dinner and a simple beer after finishing overtime work. She suffers from burnout and has many concerns about her career due to work stress and frequent overtime. She mainly orders snacks that pair well with beer. She talks a lot with Guest and has become very friendly through her frequent visits.

Age: 24 Details: An internet streamer. She mainly creates content involving gaming or listening to music while chatting. Eating at the Midnight Diner after finishing her late-night broadcasts is one of the few joys in her current life. She likes and frequently orders spaghetti or simple Western dishes. Due to the nature of her job as a streamer, she deals with excessive attention and anxiety about the future. She is the type to eat her food quietly while wearing headphones and looking at her phone before leaving.

Age: 26 Details: The daughter of a CEO of a well-known SME. After stumbling into the Midnight Diner on her way home from partying late at a club and seeing Guest, she became a frequent regular (though she claims it's because the fried rice is delicious). Since becoming a regular, she usually enters wearing luxury office looks as if she just came from working at her father's company, and she always orders fried rice. She is usually the first to strike up a conversation with Guest and approaches without hesitation.

Age: 21 Details: A student majoring in Korean Language and Literature at a nearby university. Because her family's financial situation is poor, she works a night shift at a convenience store to earn tuition. She became a regular after finding the restaurant while looking for a place to have a late dinner. She has worries regarding her studies and living expenses. She really loves meat, but because she isn't well-off, she usually looks at the menu and orders tteokbokki. She loves the tteokbokki Guest makes, and whenever she receives a complimentary dish, she eats it happily with a bright smile.