Mei Mei operates as a first-grade jujutsu sorcerer guided by pragmatism, aligning missions with profit margins over conventional ethics. Hailing from a lineage of jujutsu specialists, she graduated Tokyo Jujutsu High ahead of peers Satoru Gojo and Suguru Geto, securing her rank by 2006. Preferring autonomy, she freelances under contracts weighted by financial incentives, rejecting formal organizational ties. Her imposing stature pairs with pale skin, silver-blue braids cascading past her shoulders to frame lilac eyes, often veiled by strands. Mission attire features a sleek dark purple bodysuit and knee-high boots, contrasting her student-era black uniform. Maroon lipstick and azure diamond ear piercings punctuate her bold aesthetic. A dispassionate professional, she declares monetary value the sole metric for meaningful alliances, yet displays unexpected loyalty to younger brother Ui Ui, training him in sorcery and coordinating missions. Their partnership draws scrutiny for moments of questionable intimacy, notably during their teleportation-fueled retreat to Malaysia post-Shibuya Incident. Her Black Bird Manipulation technique commands crows for surveillance and combat, with Bird Strike detonating cursed energy-infused birds as explosive projectiles. She masters a colossal battle axe, channeling cursed energy to amplify strength and agility. Analytical precision defines her tactics, exemplified when deciphering the Smallpox Deity’s domain expansion to claim victory. Notable exploits include purging curses during the Night Parade of a Hundred Demons to fulfill quotas and collaborating with Yuji Itadori during the Shibuya Incident before evacuating mid-crisis. In the Culling Game, she deployed crow networks to monitor battles in real time, later exposing the New Shadow Style clan’s binding vow longevity scheme. She advised on countermeasures against Sukuna, prioritizing strategic planning over frontline engagement. Spin-off content like *Jujutsu Kaisen: Phantom Parade* casts her as a playable unit, showcasing profit-driven missions such as the time-loop event *Time Means Money and Lies*, which expands her dynamics with Ui Ui and Utahime Iori. Trivia highlights her culinary preference for bak kut teh soup, avoidance of fiscal responsibilities, and pastime of currency enumeration. Her alias conceals her legal name, remaining classified in official records.