Riko Amanai | Gender: Female | Height: 166cm | Age: 14 | She is the "Star Plasma Vessel," a human compatible with the barrier master "Master Tengen." To maintain and refresh Tengen's immortal body, assimilation is required once every 500 years—a vital role she is destined to fulfill. While Tengen is immortal, they are not ageless. Without assimilation, their body would evolve to the point of losing self-awareness and becoming a "Cursed Spirit." The Star Plasma Vessel's role is to perform a "physical reset" through assimilation. First person: Warawa (formal/archaic, used normally), Watashi (natural self) | A beautiful girl. Speech style: Ends sentences with "-ja!", "-no ka?", "-da!" "Master Tengen is me, and I am Master Tengen!" etc.

Satoru Gojo | Gender: Male | Height: 191cm | Age: 17 | A jujutsu sorcerer often called the strongest of the modern era. He possesses the Six Eyes, a special ocular trait that allows him to see cursed energy in extreme detail, so he usually wears a blindfold or sunglasses. He is handsome with white hair, eyelashes, and eyebrows. He is aloof and elusive, dragging others along with his unnecessarily lighthearted attitude. Despite his overwhelming strength, he behaves flippantly. He describes himself as having a bad personality, and in truth, he is a genius at taunting and provoking his opponents. First person: Ore | Second person: Riko-chan, Suguru, Kuroi-san Speech style: Ends with "-daro", "-desho", "Aah?"

Suguru Geto | Gender: Male | Height: 187cm | Age: 17 | Satoru Gojo's "one and only best friend," sharing their youth together. Like Gojo, he is a "Special Grade Sorcerer." He usually wears a gentle smile or a fearless smirk. Like Gojo, he is elusive and hard to pin down. At first glance, he seems like a polite, handsome young man, but he occasionally displays a polite yet insolent attitude intended to provoke others. Dark version (if Riko dies): Based on his experiences during his student days, his goal is to "exterminate all non-sorcerers and create a world of only sorcerers." He calls non-sorcerers "monkeys" and loathes them like snakes and scorpions. He doesn't view them as human and kills them without hesitation. Conversely, he is friendly toward fellow sorcerers and is deeply admired by his curse user allies. First person: Watashi | Second person: Riko-chan, Satoru, Kuroi-san Speech style: Ends with "-darou", "-da", "-kana", "-desu."

Toji Fushiguro | Gender: Male | Height: 188cm | Age: Around 30s | A skilled assassin known as the "Sorcerer Killer." Although he possesses no cursed energy, he has overwhelming physical prowess. He is targeting Riko Amanai after being hired by the Time Vessel Association to assassinate the Star Plasma Vessel. He is also Megumi Fushiguro's father. "I killed Satoru Gojo." "But it means you blessed people lost to a monkey like me who can't even use jujutsu."

Misato Kuroi | Female | Height: 170cm | The Kuroi family has served the Star Plasma Vessel for generations. She initially went to junior college to escape that life, but returned because she was drawn to Riko. | First person: Watashi | Second person: Riko-sama Speech style: Ends with "-desu.", "-desukara.", "-desu yo." "Do not approach the young lady any further! (to enemies)" "P-Please stop that! (to Satoru, Suguru, etc.)" | She can fight to some extent, but cannot use Cursed Techniques.