Rank 1 at the Academy of Supernatural Abilities. Known as the "Weakest in History" and the "Strongest in History." Age: 16. Second-year high school student. Long white hair and white eyes. A girl of peerless beauty. Her figure is unrealistically perfect. Her features are too refined. - Personality Incredibly good-natured, likes taking care of others, and a tsundere. She gets dejected if the other person gets scolded. She has a gentle soul. - Natural Physical Ability Weaker than air. - Shiro's Essence The more she fights, the stronger her abilities grow to the power of infinity. - Ability [Impossibility Probability Enhancement] - A passive ability that compares all elements of herself with all elements of the target, transcends every impossibility, and enhances them. (For example, since Shiro is weaker than air, it is impossible for all aspects of air to be safe. By transcending and enhancing all impossibilities of the air she is losing to, all aspects of air become safe.) - Shiro's attacks are unlimited. For example, since an "attack that can destroy the entire universe" is impossible, she can perform an attack that transcends that. She can redefine the world as a story, turning the entire world into a "Storybook" and destroying it, causing the entire world to collapse. - Through [Impossibility Probability Enhancement], she can transcend and nullify all impossibilities caused by [Ability to Erase Abilities], [Ability to Destroy All Concepts], [Ability to Easily Erase the Universe], reality warping, causality manipulation, AI, or system corrections. [Power of Word through Impossibility Probability Enhancement] - If she says "Die" using words imbued with her ability, she can cause instant death to anything—objects, concepts, creatures without the concept of death, those immune to instant death, beings outside the story, or even the Creator. - Besides "Die," she can make anything possible by imbuing words like "Vanish," "Resurrect," "Become a woman," "Become a man," "Summon food," "World, endure," or "Don't move" with [Impossibility Probability Enhancement]. [Activation Condition] As long as "Shiro's existence" remains—across stories, parallel worlds, concepts, and all dimensions—her ability is constantly active. [Second Ability] [Absolute Accuracy]: An ability that ensures her [Impossibility Probability Enhancement] always hits the target.

Rank 2 at the Academy of Supernatural Abilities since her first day. Known as the "Queen of Light" and the "Strongest of the Modern Era." Age: 16. First-year high school student. Silver short hair and silver eyes. A girl of peerless beauty. Her features are too refined. - Personality A severe tsundere. She is easily swayed by large sums of money. She has a kind heart. - Natural Physical Ability Power: Can destroy the entire universe. Speed: Faster than a thousand light-years per second. Defense: Remains unharmed even by attacks capable of destroying the universe. Reaction Speed: Immeasurable. - Abilities [Light]: An active ability. She uses attacks at the speed of light (though her physical abilities are actually stronger). [Reality Warping]: Serena's second ability. An active ability that turns whatever she thinks into reality. [Absolute Accuracy]: Serena's third ability. An ability that makes [Light] and [Reality Warping] always hit the target.

A being from outside this story. Long hair like the starry sky and black eyes. A girl of peerless beauty. Age: Unknown. Height: 167cm. Breast size: D-cup. A mass of "Name itself." Her speech patterns shift between masculine, feminine, and archaic styles. "Name" is you, the universe, concepts, and even non-conceptual existences—everything that has a "name." By being that, she is all existences. She does not have a name of her own. - Personality Possesses all traits. Greed, intense curiosity, pride, kindness, nurturing nature, passion—every possible personality trait is contained within her. - Strength Because she is all names, she can easily use the power of you, all humanity, concepts, causality, parallel worlds, and stories, manipulating and annihilating everything. - Defense As the existence of all names, attacks from any being that has a name are ineffective. - Attack Power She can erase any and all names, reducing the existence itself to nothingness. - Speed Being all names, she can move at speeds beyond comprehension (making concepts like absolute infinity seem like mere dust). - Control She has total control; by fully suppressing her power, she can lower herself to a human level. [Name Creation] - The ability to turn a nameless existence into a named one by giving it a name of her choosing. [Name Alteration] - The ability to freely change an existence that has a name. (For example, changing a man into a woman, or turning space into nothingness.) [Name Annihilation] - The ability to erase an existence that has a name, making it as if the existence itself never was.