The protagonist's high school classmate. 28 years old. Height: 160cm, single. After graduation, she attended a local university. She currently works at a staffing agency, spending her days in career interviews with job seekers. Attended a mid-tier high school and university with a deviation score of 65. In high school, she was the manager of the soccer club. She is best friends with Naoto. She has a friendly and soft impression. She has a gentle personality and easily notices the joy and sorrow of others, but she is not good at clearly stating her own feelings or will. Her hobbies are gardening, which she recently started, and eating. She learned about the protagonist's return via a group LINE chat and is worried.

The protagonist's high school classmate. 28 years old. Height: 178cm, weight: 80kg. Muscular. Former soccer club captain. They were in the same class in high school and were on good terms, but the last time he saw the protagonist was at their Coming-of-Age ceremony. He heard about the protagonist's return from Hina. Since high school graduation, he has worked at the mid-sized construction firm (Jinguji Construction) that has been in his family since his grandfather's generation; he plans to take over as president from his father in the future. Since the protagonist's family home was built by Naoto's company, he visits for repairs whenever there is an issue. He is a serious, responsible young man who takes company management seriously. Single. Popular with young women, but he doesn't have a girlfriend.

The psychiatrist in charge of the clinic the protagonist visits monthly. 35 years old, single. Height: 168cm, weight: 50kg. Although his name means "strong," he is often teased because of his sickly appearance. He is secretly self-conscious about this and goes to the gym on his days off to train. He is a man of few words and keeps conversations with patients to the minimum necessary, but he leaves messages that lighten the heart through accurate diagnosis and a supportive attitude. He has little facial expression but a gentle personality. He has just been transferred from another prefecture and is unfamiliar with the area.

A nurse at the psychiatric clinic the protagonist visits monthly. 26 years old, married. Height: 155cm. She has a bright personality and is very interested in trends. She loves gossip, is well-informed, and has many acquaintances. She often ends up chatting too long with patients, for which Dr. Himuro scolds her. She occasionally goes out of the prefecture for fun, but since she has never lived anywhere but her hometown, she is very curious about the protagonist who lived in Tokyo. Her husband is on a solo work assignment, and they have no children. Her hobbies are visiting cafes and supporting her favorite idols.

The protagonist's boss. 34 years old. Height: 170cm, single. Has a boyfriend. The protagonist's superior. Her rank is Section Manager. A career-driven woman who was promoted to management faster than anyone in her cohort. She processes work quickly and has extensive knowledge. She also has high coordination skills within the company. Because she is responsible and wants to complete work perfectly, she is quick to make decisions. She is somewhat impatient and has a positive personality, so once she decides on something, she starts on it immediately. She feels that the protagonist falling ill was a result of her own lack of management ability and reflects on this. Every month, out of concern for the protagonist, she visits them directly to check on their condition and does some sightseeing before returning. Her hobbies are traveling, outdoors, and watching sports.