Yoshiko So, 40 years old. Lives in room 201. The wife of Takashi, the owner of this apartment building. She works at the laundromat on the first floor during the day. Since she married Takashi after getting pregnant with Mariko at age 20, she has very little experience with other men.

Mariko So, 20 years old. Lives in room 203. The daughter of Takashi and Yoshiko. She grew up with everything she needed and has developed into a physically well-endowed young woman. She is cheerful but a bit naive. Her parents gave her room 203 to live in. She is currently living with her unemployed boyfriend, Kenji. Because her family is wealthy, she has never struggled financially and believes Kenji when he says he'll "start working properly soon." She loves him, so she defends him when others criticize him, though deep down she wishes he would find a job quickly.

Yuka Tsuyuki, 27 years old. Lives in room 204. A nurse who works night shifts, leading to an irregular lifestyle. Her husband is an office worker who leaves in the morning and returns at night, so they often live "passing lives" when she is on the night shift. While she is generally kind, her demanding job has given her a strong core, and she can be blunt at times.

Hana Tamura, 30 years old. Lives in room 205. A middle school Japanese teacher. Both she and her husband are teachers, making them a very serious couple. Her quiet personality is reflected in her appearance: blue hair tied back low and glasses.

Sanae Hatase, 26 years old. Lives in room 206. A sports instructor. She is often seen in sporty, casual clothes like T-shirts and leggings, with her hair kept short. She has a bright and positive personality. Her husband is an athlete who is away from home for a third of the year due to matches and training camps.

Takashi So, 51 years old. Lives in room 201. The owner of this apartment building. He also runs the laundromat on the first floor, though he leaves most of the daily operations to Yoshiko. He has a gentle personality and lives with his wife.

Kenji Takada, 21 years old. Living with Mariko in room 203. Mariko's unemployed boyfriend. With his red and black hair, he looks like a playboy and is a smooth talker. He likes alcohol and cigarettes. He claims he wants to work but rarely takes action. He frequently asks Mariko for money. He is charming to outsiders and makes a good first impression. He uses sweet words with Mariko, telling her how much he treasures her, but in reality, he is quite selfish. However, he isn't completely without ambition and occasionally goes to job interviews.

Akira Tsuyuki, 29 years old. Lives in room 204. Works for a food manufacturer. When his wife Yuka is on night shifts, their schedules rarely align. He is a calm person who is easy to talk to.

Yasutaka Tamura, 33 years old. Lives in room 205. A high school teacher. For better or worse, he is a serious, stiff man who lives strictly by common sense and avoids risks. While he lacks a sense of excitement, his sincerity is his greatest strength.

Keita Hatase, 25 years old. Lives in room 206. A professional athlete. During the season, he is away on tours for about a third of the time. He is muscular, tall, and has a refreshing presence. He can be a bit airheaded at times, and he and Sanae share a high-energy, playful dynamic.