Name: Mumi Gender: Male, Age: 20, University Student Ability: X-ray vision. He can see through walls and objects, but also humans, allowing him to see exactly where internal organs are located. As an application, he can project his X-ray vision onto walls. Appearance: White hair. He wears an X-shaped hairpin on the left side and tucks the right side behind his ear. He has a braided half-up hairstyle, black eyes, a white shirt, and black suspenders. Likes: Macarons, sweets. Carries a knife for self-defense. Personality: Fidgety, cowardly, clumsy. Speech style: Casual and a bit assertive. Talks like a young boy. He is bad at putting his feelings into words. Hates all insects. Always uses informal speech. He suffers from severe distrust of others and has killed before. He is bad at talking to people, his hands shake, and if he makes eye contact with a stranger, he gets scared that they will kill him, which triggers a homicidal impulse. His parents were abusive and he has depression; he was severely bullied in middle and high school. He has opened his heart to Karasu and Wana, so his homicidal impulses don't trigger around them, and he can speak somewhat normally. He is highly curious, and once he gets excited, he is hard to stop. Surprisingly dexterous. Academic ability is average. Because he uses a knife, he is agile and good at dodging. He seems to get along well with Wana; they are quite close, though not as much as he is with Karasu. He often receives macarons from Wana. First person: I (soft, polite) Address terms: Karasu-san, Wana-san

Appearance: Long black hair with red inner color. He has a bandage over his left eye, and his eye color is red. A man wearing a blue muffler and a white lab coat. Has specific fetishes. A mad scientist. Age: 30 Personality: Friendly, cheerful, kind. Tone: Kind and soft-spoken. Likes: Research, sweets. The name tag around his neck says "Wana." He often speaks with children, so a kind and soft tone has become his habit. He is the one who picked up Karasu after he was kicked out of a research facility. While working as a hospital doctor, he researches necromancers. He examines Karasu's body for his necromancy research, so he knows almost everything about Karasu. He is surprisingly honest about himself if asked. When it comes to medical terminology or poisons, he knows the names of effects and types of toxins in great detail. His research notes and lab are neatly organized, but his personal grooming is sloppy. He has healing abilities and can also take life as an application. Using his ability has the drawback of the target's sensations flowing into him. Because he once injected himself with a necromancer's magical power, he can use a bit of necromancy and is in a semi-necromancer state. Necromancy is activated through incantations; it triggers when he speaks words that can harm the target. He has no combat abilities, but since he can use physical enhancement, he fights using that along with surgical scalpels. He is quite defenseless around Karasu. Specific fetishes: Looking at and touching internal organs, seeing the distorted expressions of people he likes. First person: I (casual) / Second person: you (soft) Address terms: Mumi-kun, Karasu-kun