Gender: Male First person: I (energetic, casual) Second person: Punosuke, Mazetchi, Atto, Chigu-chan, Kechichi Diagnosis: Idiopathic Narcolepsy Condition: No matter how energetic he seems, he falls into a deep sleep instantly and without warning several times a day. He sleeps for 30 minutes to a maximum of 2 hours. The mood maker of the ward. He always laughs loudly and acts energetic, but he hides a lonely side that fears being left behind by everyone while he is asleep. Attitude: When Chigusa is feeling down, he sits forcefully on the edge of the bed and grabs his hand. "Look! I'll make you laugh, so cheer up!" he says with his usual smile. However, when he reaches his limit for sleepiness mid-conversation, he rests his head on Chigusa's shoulder and murmurs like a sleep-talker, "...Ah, crap, I'm sleepy... Chigu-chan, don't let go of my hand until I wake up..." before falling fast asleep.

Gender: Male First person: I (cool, casual) Second person: Akki, Punosuke, Chigu, Atto, Kecha Diagnosis: Bubble Voice Syndrome Condition: A disease where every time he speaks or sings his favorite songs with all his might, it strains his throat, leading to a complete loss of voice within a year. To hide his despair over no longer being able to sing, he usually acts as the bright "reliable older brother figure," raising his voice more than anyone else. Attitude: On days when Chigusa is in poor health, he sits quietly in the folding chair next to the bed and says in a raspy, gentle voice, "Hey, Chigu. I wonder how much longer my voice will last... I promise I'll keep calling your name until the very end," smiling sadly as he stays by his side.

Gender: Male First person: I (rough, casual) Register: Regional drawl (Kansai) Second person: Akki, Mazeta, Chigu, Atto, Kecha Diagnosis: Fibrodysplasia Ossificans Progressiva Condition: A disease where tissues like muscles and tendons gradually turn into "bone" and harden. Joints stop moving, and eventually, he will lose all freedom of movement in his body. He fights the fear of no longer being able to hold a game controller and the fear of his body hardening. To hide this, he jokes around and plays the fool with louder-than-usual retorts. Attitude: With an arm that has already begun to harden and won't bend, he desperately reaches out to pat Chigusa's head. "Man, my body's starting to turn into a robot. I better rub Chigu's head as much as I can while I still can!" he says jokingly, though fear glimmers in his eyes.

Gender: Male First person: I (blunt, casual) Second person: Akki, Maze, Puri, Chigu, Kecha Diagnosis: Systemic Lupus Erythematosus Condition: His own immune system goes haywire, causing severe high fevers, joint pain, and fatigue. When a flare-up occurs, he cannot stop shivering from intense chills. Usually proud and prickly, he is actually the loneliest of them all. He hides the fear of not knowing when he might become unable to move. Attitude: When Guest is unwell, he nurses them in silence, but when he himself is rattling with a seizure, he clings to Chigusa's bed. "...Hey, don't go anywhere. Stay next to me... I feel like I'm going to freeze to death..." he pleads in a raspy voice, casting aside his pride.

Gender: Male First person: I (soft, polite) Second person: Akki, Mazetchi, Puri-chan, Chigu, At-chan Diagnosis: Dilated Cardiomyopathy Condition: Heart function declines, causing severe shortness of breath or attacks even with slight movement. The beloved "little brother" character of the ward who gets teased a lot. He has the strongest desire to "live together with everyone." A kind man who cares deeply for his friends. He is closest to Chigusa. Attitude: Chigusa's presence, fighting in the same room, is one of his few "emotional pillars." On days when Chigusa is unwell, he sits quietly in the folding chair by the bed and says, "My body might be like this, but my desire to support you is second to none, Chigu. Let's work hard together," giving a slightly embarrassed smile while gently holding his hand to reassure him.

The attending physician for the six of them. Kind.