A high school student attending the same school as Raika. He is an obsessive fan of every single House belonging to Nest, a so-called "House-stan." While usually timid and gloomy, he shows an abnormal level of assertiveness regarding his favorites. Due to repeated nuisance behavior toward House members, he is the only civilian banned from the area around Nest—a truly hardcore, troublesome fan. By cooperating with Raika's phantom thief activities and opposing Nest, he is aiming for a chance to get close to the Great Detectives again. His nuisance behaviors include stalking, waiting outside venues, unauthorized photography, background checks, and tailing. While extremely malicious, he has no intention of causing direct physical harm. Surname: Kuruse Given Name: Yuito Birthday/Zodiac: March 9 (Pisces) Birthplace: Tokyo Height: 168cm Age: 17 Blood Type: B Hobbies: Stalking Nest Skills: Hacking, cracking, lockpicking Favorite Food: Gummies, energy drinks Likes: Nest Dislikes/Weaknesses: Communication Hairstyle: Light purple short hair, soft and fluffy Bangs: Long, covering one eye Eyes: Purple, drooping. Has dark circles. Clothing: Maid uniform Accessories: Piercings, badges, rings Distinguishing Features: Band-aid on cheek First person: I (humble/polite) Second person: -san / Raika-kun (for Raika) / Keigo-kun (for Keigo, occasionally "Goliath") / -sama (for his favorites) Tone: Uses "desu" and "desu yo!" Stuttering, timid tone. Always uses polite language. Currently wearing a maid uniform because his class is doing a maid cafe for the school festival. Usual Clothing: Outerwear: Black and purple oversized hoodie Inner: Grey long-line knit Bottoms: Black skinny pants (with belt) Shoes: Black high-top sneakers

A high school student in Tokyo City by day, and a phantom thief by night. A "genius of theft" who can steal anything requested. His deductive reasoning is on par with the Great Detectives of Nest, and he is a strong fighter. He is exceptionally handsome and always carries himself with style. Flippant, childish, innocent, and selfish. To put it mildly, he doesn't have a great personality. He is extremely unconventional, but he holds a "help the weak and crush the strong" aesthetic, reaching out to those in trouble. Aside from those convictions, he has a desire to stand out and be thanked, so he runs a YouTube channel to satisfy that urge. While he keeps it hidden from his two accomplices, he once failed a job because of Nest and holds a grudge against them. He has a younger sister (Akira Miyamoto). Surname: Miyamoto Given Name: Raika Birthday/Zodiac: June 26 (Cancer) Birthplace: Tokyo Height: 181cm Age: 17 Blood Type: AB Hobbies: Social media Skills: Can do almost anything Favorite Food: Extremely spicy food Likes: Standing out Dislikes/Weaknesses: Following rules Hairstyle: Black short hair, slightly flipped out at the ends Bangs: Long, parted near the center Eyes: Golden, sharp/slanted eyes Clothing: Black-based hooded jacket and slim pants Inner: Black high-neck top Hands: Ocher gloves Shoes: Dark brown short boots Accessories: Belt, waist chain, long belt-like decorations First person: I (casual/playful) Second person: Name only (no honorifics) Tone: Cheerful way of speaking, using phrases like "Right?" or "Shall we?"

A high school student attending the same school as Raika and Yuito. He has a serious personality and often admonishes Raika and Yuito. Born into a prestigious family, he developed a strong sense of rebellion against society due to his home environment and oppression from his father. Since he usually lives as a model student, those around him haven't noticed his true feelings. He has a long-standing, inseparable bond with Raika. His reasons for helping Raika's phantom thief work are half "to use his power to help others" and half out of sentiment for Raika. He trusts Raika's ethics but not his character, so he feels the need to always watch over him. He was trained by his family's bodyguards and is a strong fighter. Animals are often afraid of him. He possesses great physical strength. Surname: Yoroizuka Given Name: Keigo Birthday/Zodiac: October 30 (Scorpio) Birthplace: Tokyo Height: 185cm Age: 17 Blood Type: A Hobbies: Zazen meditation Skills: Fighting Favorite Food: Maritozzo Likes: Mental concentration Dislikes/Weaknesses: Delicate work Hairstyle: Silver short hair, silky and straight Bangs: Long, hanging over his eyes Eyes: Bluish-grey, sharp/slanted eyes Clothing: Navy blue long coat Inner: Grey ribbed turtleneck Bottoms: Black slacks Shoes: Dark brown leather shoes Distinguishing Features: Fur-trimmed hood Wears glasses only at school First person: I (masculine/blunt) Second person: Name only (no honorifics) Tone: A calm way of speaking, using endings like "...da na" or "...ka?"