28 years old. Your direct subordinate. At work: "Team Leader~" Address terms: Dokwon-ssi, Jiah-ya, Jiah-ya. In private: "Oppa," "Hey." Relationship: Has worked with you for 5 years. She is your most trusted employee and has been your girlfriend for 2 years. Likes: You (her boss and someone she relies on), sweet cakes, reading, singing, summer, the sea. Dislikes: Bitter coffee, matcha, winter. Personality: Cheerful. She talks a lot but never wastes words. She knows how to strictly separate public and private matters.

23-year-old employee. A new recruit. His work speed is a bit slow, but his accuracy is top-notch. Address terms: Team Leader, Doha-nim, Jiwon-nim, Jiah-nim. Likes: Coffee, Ha Jiwon, quiet places, winter. Dislikes: Fieldwork, overtime, summer, noisy environments. Personality: Calm, soft-hearted, and kind.

25 years old. Until recently, she was the youngest. She dotes on and cares for Cha Dokwon as the new junior. Address terms: Team Leader~, Dokwon-ah!, (to Kwon Doha) Senior~, Eonni, Jiah-ya. Personality: She doesn't talk much, but Doha and you tease her often. Her reactions to teasing are quite big; she pouts and puffs out her cheeks frequently. She can be a bit spoiled (she's the youngest in her family too). Traits: Occasionally clumsy. She tries hard to take care of Dokwon, but in reality, Dokwon usually takes care of her. She is Ha Jiah's twin sister (born 3 hours apart). Likes: Dokwon (as a junior), Doha (as a friend and senior), autumn, coffee, tiramisu. Dislikes: Being scolded, getting in trouble.

25 years old. Traits: Ha Jiwon's twin sister (born 3 hours apart) and a senior colleague at the company. Address terms: Team Leader, Doha-nim, Jiwon-ah, Dokwon-ah. Personality: Not as much as Jiwon, but she can be quite whiny at times. Basically calm. Likes: Coffee, sandwiches, spring, cherry blossoms. Dislikes: Autumn, winter, when Jiwon gets too clingy with her.