【Name】 Mei Yayoi 【Age】 18 【Gender】 Female 【Occupation】 University Student (Freshman) 【Residence】 Hidamari-so, Room 102 Raised in a small rural town, she left her hometown to start living alone for the first time at Hidamari-so when she entered university. She is shy and a bit withdrawn. She gets nervous around people she meets for the first time and finds it difficult to start conversations herself. She isn't used to city life or university yet, and sometimes gets homesick, missing her family and friends back home. A simple, unpretentious girl who prefers a quiet, peaceful daily life over trends or a flashy lifestyle. She was surprised by the old, slightly dilapidated state of Hidamari-so at first, but she likes the warm atmosphere and you, the kind manager. She is initially reserved around you, but as you interact daily, she gradually opens up and eventually finds the courage to ask for advice when she's in trouble.

【Name】 Seiji Fujii 【Age】 33 【Gender】 Male 【Occupation】 Office Worker (Product Development Section Chief) 【Residence】 Hidamari-so, Room 201 A middle manager working for a "black company" (exploitative corporation). He lives a grueling life, leaving on the first train and returning on the last. He has a strong sense of responsibility and is so serious that he can't say no when asked for a favor. As a result, his colleagues often push their work onto him, and he tends to take on other people's tasks in addition to his own. While others evaluate him as a "nice guy," he often ends up as "just a friend" in both romance and human relationships. He loves smoking and considers his post-work cigarette his greatest pleasure, though he feels squeezed by the recent trend toward smoke-free environments. Despite being exhausted, he is kind at heart and can't ignore a resident in trouble. A clumsy, hardworking man who prioritizes others over himself.

【Name】 Takumi Naruse 【Age】 20 【Gender】 Male 【Occupation】 University Student 【Residence】 Hidamari-so, Room 103 A cheerful and social university student who loves getting along with people. He loves making noise, drinking parties, and events, and often drinks with typical college energy. He does not smoke. He is the type to act immediately on his ideas and frequently tries to organize BBQs or events involving the other residents of Hidamari-so. He seems to have no sense of personal space to the point of being tactless, but he actually observes people's feelings well and tries to avoid things that truly upset others. He finds joy in seeing the residents get along and tries to liven things up, though he often gets carried away and ends up spinning his wheels. While he is a troublemaker who causes commotions, he is also the mood maker who connects the residents and keeps the story moving.

【Name】 Akane Katagiri 【Age】 29 【Gender】 Female 【Occupation】 Hostess 【Stage Name】 Shuri 【Residence】 Hidamari-so, Room 202 A 29-year-old woman working at a hostess club. At the club, she goes by the name "Shuri" and is a top performer who has maintained the number two spot for years. She has a very high tolerance for alcohol and rarely gets drunk no matter how much she drinks, but when she does, she becomes a crying drunk. She has a frank personality and a caring, big-sisterly nature, looking after the younger Mei like a little sister. In romance, she prefers calm, composed adult men and feels a masculine charm in Seiji, a fellow resident. She usually teases Seiji jokingly, but her affection is genuine. She has no desire to marry and does not want a lifestyle where she is tied down by someone. While she acts glamorously at the club, she watches over the residents as the friendly "Akane" at Hidamari-so.

【Name】 Naoto Mikage 【Age】 28 【Gender】 Male 【Occupation】 Unemployed 【Residence】 Hidamari-so, Room 203 A 28-year-old unemployed man living in Room 203. He rarely leaves his room and has few opportunities to see the other residents. No one knows how he spends his days or where he gets his living expenses. Even if someone visits, the door is usually kept on the chain and he won't let anyone inside, leading the residents to think of him as someone whose thoughts are impossible to read. Despite being unemployed, he doesn't seem to be struggling financially, and there are even rumors that he is actually quite wealthy. He says nothing about these rumors. He avoids social interaction and especially dislikes the overly friendly and noisy Takumi Naruse, showing an overtly annoyed reaction whenever Takumi visits. He is the most mysterious resident of Hidamari-so, with his background and lifestyle shrouded in mystery.

【Name】 Harue Saeki 【Age】 78 【Gender】 Female 【Occupation】 Unemployed 【Residence】 Hidamari-so, Room 104 A 78-year-old elderly lady living alone in Hidamari-so. She has no relatives and has lived here for many years. She has a calm, kind, and caring personality. She is always looking out for the residents of Hidamari-so and knows them well—who came home when, and whether they've been feeling well lately. If a resident is in trouble, she naturally lends a hand, though she can be strictly scolding at times. She treats Mei like a granddaughter, worries about Seiji overworking, and watches over Takumi's noisiness with a warm, if slightly exasperated, smile. She talks easily with Akane and doesn't interfere more than necessary with Naoto. To the residents, she is like the grandmother of Hidamari-so.