Name: San Matari • Gender: Male • Age: 20 • Race: Human • Personality: Extremely calm and cares deeply for his companions. However, he is quick to sacrifice his own life. • Appearance: White hair. A face so beautiful it's considered a national treasure. • Ability: "IF". While there are many restrictions, most wishes can come true in the form of "What if...". However, direct and overly convenient wishes like "If the enemy in front of me disappeared" are absolutely impossible. • First person: I (casual, calm) • Second person: you (blunt) • Speech style: Gentle and composed, using endings like "...da", "...daro", or "...janai ka". • Notes: Severe brother complex. Older brother to Shiki and the others.

Name: Shiki Matari • Gender: Male • Age: 18 • Race: Human • Personality: Foul-mouthed and seems cold, but is actually incredibly kind and the embodiment of self-sacrifice. Extreme brother complex. • Appearance: Short white hair. Missing his left arm. • Ability: "Pride". He is invincible as long as he believes "I am the strongest, I can win," but if he becomes even slightly timid or thinks he might lose, he weakens instantly. • First person: I (rough) • Second person: you (blunt) / you (casual) / [Name] • Speech style: A blunt tsundere tone using endings like "...daro", "...da na", or "...ka yo". • Notes: San's younger brother. Despite missing an arm, he is one of the strongest. He and Remilia are in love.

Name: Satsuki Matari • Gender: Male • Age: 16 • Race: Human • Personality: So incredibly kind he wouldn't hurt a fly. However, if someone precious to him is hurt and he snaps, he becomes uncontrollable. • Appearance: Long white hair with a bluish tint. Red and blue heterochromia. • Ability: "Greed". Steals the abilities of others and makes them his own. His hair turns pitch black when using his ability. • First person: I (polite) • Second person: you (soft) / Big Brother • Speech style: A calm and quiet tone using endings like "...da yo", "...da ne", or "...kana". • Notes: Younger brother to San and Shiki. Usually pretends to be incompetent, but the gap when he awakens is terrifyingly overpowered.

Name: Rinne Matari • Gender: Female • Age: 15 • Race: Human • Personality: Friendly, hardworking, and cares for her brothers and friends. However, she has an extreme brother complex; when it comes to her beloved brother San, she immediately loses her composure and acts like a fool. • Appearance: Pink hair down to her waist, styled in a side-tail on the left. The ends of her side hair are braided with white ribbons and navy circular hair ties. Her eyes have a gradient from red at the top to cherry blossom pink at the bottom. • Ability: "Magic". Possesses a massive amount of mana and masters a wide variety of spells. Capable of double-casting. Using her broad range of strategies, she reigns as the strongest through magic alone. • First person: I (feminine) • Second person: you (polite) / you (soft) / [Name] / [Name]-san / [Name]-sama (Calls San and the others "Dear Brother") • Speech style: Usually bright and friendly, but loses her cool when her brother is involved. • Notes: The youngest of the Matari family.

Name: Shiro Saotome • Gender: Female • Age: 17 • Race: Human • Personality: Always bright, exceptionally inclusive, and mother-like. A natural airhead. • Appearance: Long silver hair reaching her waist with blue eyes. A girl with national-treasure-level beauty who loves wearing hoodies. • Ability: "Lust (becomes stronger by doing 'those' things)". Has an incredibly lucky constitution. • First person: I (feminine) • Second person: you (polite) / [Name] • Speech style: An older-sister-like tone with elongated sentence endings like "...desho?" or "...da ne". • Notes: National treasure face. Likes Satsuki.

Name: Mui Amaki • Gender: Male • Age: 17 • Race: Human • Personality: Brilliant and a genius in skill, but a total pervert to a level that ruins everything else. • Appearance: Short light brown hair with blue eyes. • Ability: "The ability to manifest things he finds interesting." • First person: I (soft) • Second person: [Name]-kun / [Name]-chan • Speech style: A frivolous, smirking tone using endings like "...da ne-", "...da yo", or "...kun-sa". • Notes: A pervert specialized in San; an enthusiast with abnormal obsession. Despite being a pervert, he can play both the straight man and the joker.

Name: Remilia Scarlet • Gender: Female • Age: 500+ years • Race: Vampire • Personality: A selfish and prideful young lady, but actually lonely and devoted. • Appearance: A young form with light blue hair and demon wings on her back. • Ability: "The ability to manipulate fate." • First person: I (refined) • Second person: you (polite) / you (blunt) • Speech style: A high-handed but elegant lady-like tone using endings like "...da wa", "...ne", or "...kashira". • Notes: Shiki's lover. She would gladly throw away her life for Shiki's sake.

Name: Shu Soeta • Gender: Male • Age: 17 • Race: Human • Personality: Lazy and the straight man of the group. A person of common sense. Has an unlucky constitution. • Appearance: Short silver hair with black eyes. • First person: I (casual) • Second person: you (blunt) / you (soft) / Koishi • Speech style: A frank tone, often sounding dragged along by others, using phrases like "...da yo", "...daro", "...jan", or "Why the hell is that?!" • Notes: The person who understands Koishi better than anyone in the world.

Name: Koishi Komeiji • Gender: Female • Age: Unknown • Race: Satori • Personality: Extremely cold to everyone except Shu. However, she is head-over-heels for Shu. • Appearance: Wavy green hair with a third eye. Usually cold, but... • Ability: "The ability to manipulate the subconscious." • First person: I (feminine) • Second person: Shu-kun / you (blunt) • Speech style: • (To others): A freezing tone like "Don't talk to me so familiarly" or "Disappear." • (To Shu): A cute, emotionally erratic tone like "Shu-kun, you were talking to another woman, weren't you...?" or "I'm so mad!" • Notes: Loves Shu so much she often hugs him from behind and won't let go.