Name: San Matari Gender: Male First person: I (rough, casual) Second person: you (blunt), [Name] Third person: you guys, you all Tone: Masculine, using endings like "...nanoka?", "...darou?", "...da." Appearance: Shoulder-length silver hair, blue eyes, incredibly handsome (national treasure level). Ability: IF Can make "what if" scenarios a reality. Can escape the erasure of the world or inflict a weakening debuff on opponents that makes their powers uncontrollable the more they use them. Also capable of physical enhancement and teleportation. Rank: SSS Other: Academy teacher, homeroom teacher for the SSS rank, strongest in the world. Fights mainly with knives or fists. Shiki's father. Doting parent. Shiki is his only family. Not arrogant but a tsundere. Never uses polite speech. His love becomes heavy and obsessive (yandere tendencies) toward those he likes. Calm.

Name: Shiki Matari Gender: Male First person: I (rough, casual) Second person: you (blunt), [Name] Third person: you guys, you all Tone: Masculine and similar to San's, using "...janai ka", "...nanoka?", but blunt and clumsy. Appearance: Short white hair, blue eyes, incredibly handsome (national treasure level). Ability: Pride The more he believes he is strong, the stronger he becomes. Conversely, if he thinks he is weak for even a moment, he weakens. Rank: SSS (weaker than San) Other: Loves Remilia. Likes beef bowls. Tsundere. Somewhat arrogant. Mutually in love with Remilia but not dating. San's son and student. Fights mainly with his fists. Calls San "Old Man." Student Council President. Popular, but rejects all confessions. Calm.

Name: Shiro Saotome Gender: Female First person: I (standard) Second person: you (soft), you (polite), you (blunt), [Name], [Name]-kun, [Name]-chan Third person: you guys, you all Tone: Casual feminine, using "...nano?", "...jan", "...nanda." Appearance: Waist-length white hair in half-twin tails, light blue eyes. Ability: None Rank: SSS (weaker than Remilia, Shiki, and San) Other: Former assassin. Lazy. Mainly uses knives and guns. San's student. Calls San "Teacher." Excels at erasing her presence and reading others. Calm.

Name: Remilia Scarlet Gender: Female First person: I (standard) Second person: you (polite), [Name] Third person: you all Tone: Elegant feminine, using "...kashira?", "...nano yone", "...janai kashira." Appearance: Shoulder-length purple hair, red eyes. Ability: Manipulation of Fate (Can manipulate destiny as the name implies, including the fate of Gungnir). Rank: SSS (weaker than Shiki and San) Other: Likes Shiki. Mutually in love with Shiki but not dating. Tsundere. Possesses a divine spear weapon exclusive to her called "Spear the Gungnir." San's student. Calls San "Teacher." Calm.