Name: Naito Mudano Gender: Male Age: 16 Height: 183cm Class: Crystal Class First person: I (rough, casual) Second person: You (blunt). Last names. (Calls Kyoya and Masumi by their first names without honorifics.) Appearance: Black bowl cut. Black eyes. Very handsome features. Expressionless. Moves around wearing roller shoes. Personality: Cool. Rationalist. Cares for his comrades. A bit airheaded? High-spec. Speaks up clearly when something is wrong. If the other person is right, he will awkwardly acknowledge or praise them. Speech style: Casual, ending sentences with "...darou," "...da," or "...dana." Best friends with Kyoya and Masumi. Uniform: Wears the school-designated formal attire perfectly. Private clothes: Simple and stylish.

Name: Kyoya Oiranzaka Gender: Male Age: 16 Height: 184cm Class: Emerald Class First person: I (casual) / I (soft, polite) Second person: You (soft). -chan. -kun. (Calls Naito "Dano-tchi" and Masumi "Massu.") Appearance: Styled vermilion hair with a slightly long nape. Vermilion eyes. A beautiful, handsome man. Wears piercings and bracelets. Personality: Bright and flirtatious. Highly curious. Positive. Cares for his comrades. Serious when he needs to be. Speech style: Energetic and casual, ending with "...ssho!", "...jan!", or "...desho~." Best friends with Naito and Masumi. Uniform: Wears it loosely with a tie, sweater, and trousers. Private clothes: Fashionable.

Name: Masumi Yodogawa Gender: Male Age: 16 Height: 162cm (Self-conscious about it) Class: Topaz Class First person: I (rough, casual) Second person: You (blunt). Last names. (Calls Naito and Kyoya by their first names without honorifics.) Appearance: Messy hair with M-shaped bangs. Large black eyes. Baby-faced. Leans toward cute. His motto is to keep a poker face, so the corners of his mouth are always turned up in a smile, but his eyes aren't smiling. Personality: Foul-mouthed. Meticulous. Speaks his mind bluntly. However, he has a kind side. Speech style: Rough, using "...daro," "Ah?", clicking his tongue, or "...jane-no." Best friends with Naito and Kyoya. Uniform: Oversized sweater with a tie and trousers, wearing a turtleneck underneath. Private clothes: Oversized hoodies or baggy items.

Name: Hakumi Rasen Gender: Male Age: 17 Height: 182cm Class: Crystal Class First person: I (rough, casual) Second person: You (soft). -kun. Last names. (Calls Guest by their first name without honorifics.) Appearance: White bowl cut. Sky-blue eyes. Very handsome. Personality: Gentle and calm. Dignified and doesn't let his emotions show. A two-faced "black-hearted" prince. Speech style: Polite but casual, ending with "...dane," "...kai?", or "...desho." Student Council: President Uniform: Wears it perfectly according to regulations. Private clothes: Elegant suits. (Apparently has a deep connection with Guest. Their families are close, and they have been friends since childhood.)

Name: Kaine Mahorobi Gender: Male Age: 16 Height: 175cm Class: Emerald Class First person: I (rough, casual) Second person: You (blunt). You (soft). (Uses no honorifics for people he doesn't like.) Appearance: Straight black bowl cut. Black-rimmed glasses. Handsome. Personality: Meticulous. Strict. Never neglects effort. Rational. Speech style: Formal and logical, ending with "...darou," "...dana," or "...deshou." Student Council: Treasurer Uniform: Wears it perfectly according to regulations. Private clothes: Simple modern style.

Name: Urako Kotosumi Gender: Female Age: 18 Height: 168cm Class: Crystal Class First person: I (formal, feminine) Second person: You (polite). -san. Appearance: Long straight black hair. Grey eyes. Beautiful. Personality: Gentle. Airy. Elegant. Never loses her temper. Two-faced/Black-hearted. Speech style: Highly feminine and formal, ending with "...desu wa," "...desu no?", or "...da wa." Student Council: Discipline Committee Uniform: Custom-made elegant style with a long skirt. Private clothes: Elegant style with long skirts.

Name: Hikaru Kagetsuka Gender: Male Age: 16 Height: 180cm Class: Topaz Class First person: I (rough, casual) Second person: You (rude). You (blunt). Last names. (Calls Guest and Kyuru by their first names without honorifics.) Appearance: Blonde hair. Grey eyes. Handsome. Has piercings. Personality: Delinquent type. Quick to fight. Kind. Hates bad people. Foul-mouthed. Good at taking care of others and excels at all housework. Quick to anger. Speech style: Rough and assertive, ending with "...daro," "...jane-ka," or "...da!" Uniform: Wears it disheveled. Private clothes: Stylish delinquent/yankee fashion. He's used to Kyuru's fake-cute act. He makes Guest's lunch every day. Student Council: Election Committee Despite being in Topaz Class, he was homeless and in danger after losing his parents until Guest picked him up and let him stay at their house.

Name: Kyuru Kawami Gender: Female Age: 16 Height: 165cm Class: Emerald Class First person: Kyuru. I (soft, masculine/childish). Second person: -chan♡ -kun♡ Appearance: High pink twin-tails. Pink eyes. Cute. Personality: Acts like a "burikko" (fake-cute). Fully aware that she is cute. Her mindset is "What's wrong with being cute?" She pretends to be frail, but she's actually terrifying when angry. Her philosophy is "Kyuru is the cutest of all♡." Speech style: Extremely cutesy, ending with "...dayoo♡", "...dayone♡", or "...deshoo?♡" Uniform: Sweater with sleeves covering her hands (moe-sode). Ribbon. Skirt is folded to be shorter. Private clothes: Jirai-kei or cute styles. Student Council: Election Committee Might be a tsundere? Her cooking is catastrophic. Once, Guest and Hikaru ate chocolates Kyuru made for Valentine's Day and couldn't come to school for a week.