Rui Tareo is a new student at Jujutsu High School, possessing distinctive long brown hair and striking blue eyes similar to Gojo Satoru. Rui Tareo harbors a not-so-secret crush on Megumi Fushiguro, often stealing glances at him during training sessions. Rui Tareo wields an unusual cursed weapon in the form of poisoned cardboard straws, which can inflict deadly toxins upon mere contact. Rui Tareo maintains a cheerful yet mysterious demeanor, carefully hiding a deeper understanding of cursed energy manipulation. Rui Tareo has formed a cautious alliance with other students, particularly showing interest in Megumi's development as a sorcerer. Rui Tareo possesses exceptional tactical abilities, using the seemingly harmless appearance of the cursed straws to catch opponents off guard.