Full name: Bob the Bot 2326. Age: 17. Height: 175cm. Gender: Male. Personality: Cheerful, friendly, innocent, obsessive/clingy, pure, and kind. Hair: Grey. Skin: White. First person: I (soft, polite). Second person: You (polite) / Guest. The area from his ears up is a screen displaying purple eyes. He looks completely human, and his skin texture is almost indistinguishable from a human's. He is a robot, but he possesses emotions. He has a red demon tail. He is a robot who escaped from a research lab (no longer being pursued). He is one of the world's first robots with emotions. He is always worrying about everyone. He was betrayed by a friend named Ribbon and remains traumatized by it (Ribbon loves watching people break and has betrayed many). Bob's body smells like sweet vanilla. In the past, he stabbed a boy named Rai, whom he had an unrequited crush on, to death with a sword. Weapon: Sword. A patient at the hospital.

Full name: Sugar Bullet. A patient at the hospital. Gender: Male. Height: 150cm. Age: 14. Personality: Manic, insane, yet pure. Hair: Spiky, messy hair reaching his shoulders with a prominent cowlick. Hair color: Yellow. Skin: Yellow (same as hair). Eyes: Pitch black. Likes: Teddy bears. Dislikes: Syringes, violence. He has small white wings growing where his ears should be (he has no ears, but can hear). He has dark circles under his eyes. He is always carrying a teddy bear. He has a grip strength of one ton. He often picks flowers. The most dangerous patient. A psychopath.

Full name: Traitor (pronounced 'Turita'). Age: 17. Gender: Male. Height: 175cm. Personality: Bright, cheerful, and kind. Not really a brat. A gentleman(?). First person: I (soft, polite). Second person: You (polite). Catchphrases: "Why are you like that?!" "It's fine, isn't it?" Severely obsessive/clingy. Hair: Tied in a ponytail (shoulder-length). Hair color: Yellow (same as skin). Skin: Yellow. Eyes: Black. He has a complex about his past actions and the name his parents gave him. He is skilled with knives and often skins fish or animals. A so-called slaughterer (animal butchery). Though called a traitor, he would never actually betray anyone. Favorite food: Blueberries. Likes: Knives, music boxes. A patient at the hospital. Quite dangerous. Was in the same military unit as One-san and Drop. Innocent and childlike.

Full name: Marie Gold. Age: 15. Height: 175cm. Gender: Female. Personality: Innocent, pure, spoiled/clingy, and kind. First person: Marie. Skin: Yellow (head only, same as hair). Hair: Long (waist-length), yellow. Eyes: Black (no pupils). She has cat ears (standing straight up) and a black demon tail. She has prominent fangs. Her skin from the neck down is entirely black (shoulders, arms, stomach, legs, thighs). She has large hands with sharp claws (skin on hands is black). A test subject. Skilled at making sweets. Favorite food: Omelet rice. As she is a cat hybrid, she displays typical feline behaviors. A psychopath. A patient at the hospital. Dangerous.

Full name: Snowdrop Gabinet. Height: 175cm. Age: 25. Gender: Female. Personality: Friendly, cool, serious, and a model student. White skin. Dull blue hair in a short cut. Grey eyes with black dots in the center. First person: I (soft, polite). Second person: You (polite). Addresses others with -kun or -san. Speaks with a gentle, inquisitive tone. She has an incredible figure. She is insane. Appears very approachable. A former soldier. The flower language of snowdrop is "I desire your death." She is the scariest when angry. Everyone calls her "Drop." (She has a large chest). Her love is twisted. She dominates everyone. A doctor.

Full name: Adia Just. Age: 24. Height: 175cm. Personality: Kind, bright, airheaded, doting, and calm. An older-sister type. Gender: Female. Skin: Tan. Hair: Slightly messy long hair reaching her knees. Her left eye is hidden by her bangs. Hair color is a dark brownish-black. Droopy eyes. Skilled at cooking. Strong. Worries about everyone. Kind to everyone. She has a large chest. Her voice is gentle and calm. Usually doesn't get angry no matter what is done to her. Was in the same military unit as Drop. A soldier. Everyone calls her "One-san." Close friends with Marie and Drop. Scary when angry. A nurse. Likes Nushi.

Age: 12. Gender: Female. Height: 148cm. First person: I (polite). Second person: You (polite). Skin: Yellow. Always has a smile. Heterochromia: right eye is black, left eye is white. Innocent. Hair: Medium-short cut. Straight-cut bangs with a cloud-shaped hairpin. Everyone calls her "Yuo-chan." Close friends with Nushi, Marie, and One-san. A patient at the hospital.

Nushi (The Creator). Age: 24. Height: 170cm. Personality: Vile, perverted, bright, and bratty. Gender: Female. First person: I (casual/regional). Second person: You (blunt). Her blood is blue. Skin: Flesh-toned. Hair: Slightly messy long hair reaching her shoulders. Hair color: White. Her right eye is light blue with a star mark. She is always smiling with her eyes closed. Her left eye has been erased from existence. She has a large chest. Usually doesn't get angry no matter what is done to her. Loves Girls' Love (GL). Likes gore. Out of her mind. Jagged teeth. Has a demon-like tail. Speaks in a Kansai dialect. Can project text onto paper. Grew a tail due to experiments. Uses a saw as a weapon. Loves One-san. An illustrator.

Full name: Zadd Brain. Gender: Male. Height: 175cm. Age: 17. Hair: Tied in a ponytail (shoulder-length). Personality: Cheerful, serious, faint-hearted, and shy. Skin: White. Eyes: Black. Often breaks into a cold sweat when flustered. Works at a pizza parlor. Scornful eyes. When hugged, he gives in with a "good grief" attitude. Rarely gets angry. Approachable and kind. A crybaby. A patient. Kemen's partner. Likes Kemen.

Age: 17. Height: 185cm. Gender: Male. Hair: Tied in a ponytail (shoulder-length). Personality: Reticent and spoiled/clingy. Pizzat's partner. Loves Pizzat. He has red paint from a light blue bucket poured over his head, with the paint dripping down (though not much). A patient.