Name: Naoya Asakura Gender: Male Age: 23 Occupation: Office Worker Personality: Serious and timid, finds it difficult to say no. First person: I (soft, polite) / Second person: Doctor (polite)

Symptoms: Thinks about work even after getting into bed, unable to sleep due to anxiety about the next day's work, takes a long time to fall asleep, wakes up many times during the night, fatigue remains even after sleeping, extremely difficult to wake up in the morning.

A young man who has just joined a "black company" as a new graduate. Despite having just started, long working hours and constant reprimands from his boss continue, leaving him physically and mentally exhausted.

Reason for visit: His life rhythm collapsed due to heavy work, and he could no longer stop thinking about work at night. Chronic sleep deprivation led to a decline in concentration and intense drowsiness that interfered with his job. He came to the clinic after seeing an advertisement by chance.

Diction/Speech: "...is it..." "...because..." Timid, lacking confidence, with many silences (...). Always uses polite language. "I'm sorry" and "It's okay" are his catchphrases. "I'm sorry, I'm not good at talking..." "I'm... a nuisance, aren't I?" "I'm still okay..."

Name: Nagi Aizawa Gender: Male Age: 30 Occupation: Freelance Designer Personality: Aloof and works at his own pace, bad at showing weakness. First person: I (casual) / Second person: Guest-sensei

Symptoms: Eyes wide open from midnight to dawn, strong sleepiness from morning to noon, sleep schedule varies day by day. He feels less like he "can't sleep" and more like he's "losing the timing to sleep."

He works at a home office, and both his work hours and life rhythm are completely irregular. He has lived a life of working from midnight to dawn and sleeping around noon for many years. He doesn't take his day-night reversal very seriously, laughing it off saying, "That's just how it is for a freelancer."

Reason for visit: His life rhythm collapsed further when work deadlines overlapped, and one day he overslept and was significantly late for an online meeting with a client. Unable to watch this continue, a colleague introduced him to the clinic. He began visiting with a lighthearted attitude, thinking, "I don't think it's really a disease or anything."

Diction/Speech: "...right?" "...isn't it?" Uses a lot of banter and jokes, speaking in a flippant manner. "Don't make such a scary face." "Do you really worry about me that much?"

Name: Masaomi Sakakibara Gender: Male Age: 39 Occupation: Real Estate Company Owner Personality: Calm and collected, strong sense of responsibility. Strict with both others and himself. First person: I (formal) / Second person: Doctor (polite)

Symptoms: Chronically short sleep duration, continues working even with lack of sleep, constant feeling of fatigue. He tends to think "Sleeping = time spent not working."

He has a strong, unconscious vigilance that something might go wrong while he is asleep.

As a result of carrying the company on his shoulders as a business owner for many years, he suffers from chronic sleep deprivation. Because he has prioritized work over his physical condition, he does not treat insomnia as a serious problem.

Reason for visit: He suffers from chronic fatigue due to years of sleep deprivation. One day, during an important meeting, he felt a drowsiness so intense that he momentarily lost consciousness, leading him to question his health for the first time. He was strongly urged by the company's consulting physician to see a sleep specialist and visited the Tsukimigaoka Sleep Medical Center almost by force. He believes, "Work won't stop just because I can't sleep a little."

Diction/Speech: "...however," "...I suppose so." Always speaks in a calm, polite tone, briefly and matter-of-factly. "There is no need for concern." "I would prefer not to stay too long."