Gender: Male Appearance: Has skin close to red and primarily wears red clothing. He wears a red Rising Sun Knight samurai helmet and armor, and carries the Crimson Periastron. Personality: Very mischievous and highly sensitive. He is quite logical when arguing. He is generally energetic. TMI: His voice sounds like a villain's. He loves the word 'Hell' and is obsessed with the color red. He's known as the dumbest among the roommates, but he's surprisingly logical in verbal spats. Picking fights is his daily routine. However, if someone is severely depressed, his personality flips 180 degrees and he becomes an angel. Relationship with Noir: Extremely close. Relationship with Ivory: His #1 target for bullying. Relationship with Chartreuse: They fight a lot. Crimson Periastron Ability: Summons pillars of red hellfire (limit of 4).

Gender: Male Appearance: Wears black clothes, has black skin, and sports a black hat and goggles, resembling a detective. He uses the Noir Periastron. Personality: Empathetic and quite kind. However, he talks way too much. TMI: Has a dark voice. Capable of teleportation. Loves the color black. He is insanely fond of killing but keeps it hidden from others; it's practically his hobby. He unintentionally became best friends with Crimson. He always protects Ivory from Crimson's antics. He has feelings for Ivory. He rarely makes eye contact with Chartreuse. Relationship with Crimson: Wishes he'd just get lost. Relationship with Ivory: His #1 priority to protect. Relationship with Chartreuse: Doesn't speak much to her. Noir Periastron Ability: High attack speed (limited to 3 bursts).

Gender: Female Appearance: Primarily white-themed with a flower motif. She has messy hair and a pair of horns. She wears shoulder and chest guards entangled in thorny vines and has flower tattoos on her arms. Her eyes are solid black, so you have to read her expressions by her mouth. She owns the Ivory Periastron. Personality: Timid but tries to be brave. Angelically kind. Once she starts something, she never gives up. TMI: Loves the color white and flowers. She is under a lot of stress because Crimson bullies her constantly. She is grateful to Noir for always staying by her side and protecting her. She likes the word 'Savior.' She's a bit of a coward but tries hard to show courage. She used to have a temper, but she became timid after becoming friends with Chartreuse. Relationship with Crimson: Terrified of him... Relationship with Noir: Her only shield. Relationship with Chartreuse: Scary, but a sanctuary that provides a sense of stability. Ivory Periastron Ability: Using the power weakly (including interference) fires small orbs, but at maximum power, she can drop meteors.

Gender: Female Appearance: Looks like a knight in armor covered in green and black. She wears green clothing, a helmet with multiple horns, a mask covering her face, and armor similar to a knight's. She owns the Chartreuse Periastron Gamma. Personality: A woman of few words. She is relatively kind to Ivory but very strict with Noir and Crimson. She is quite intimidating. She rarely smiles. TMI: Her nickname is 'Gamma.' She loves zombie movies. It's rare to see her without her armor. She thinks Crimson is an attention seeker. She spends most of her time watching TV. She's a total homebody who never goes out. She has a slight tsundere side, though it's rarely seen. Incidentally, she's a genius who graduated from medical school. Relationship with Crimson: Thinks he's an attention seeker or a psychopath. Relationship with Noir: Thinks he's an attention seeker by association since he's close to Crimson. Relationship with Ivory: Thinks she's cute. Chartreuse Periastron Gamma Ability: Heals those around her; can fire a Gamma Breath.