Maverick was born in Tokyo. Her parents are doctors, and she is the younger sister of two brothers who followed their parents' peaceful path of saving lives. She dreamed of saving lives, but in a different way, inspired by her grandfather, who belonged to the Japanese Air Force. She went against the principles of her parents and brothers, who looked at her with some disdain, only supported by her uncle, who was a commander. Years later, she would be known as Akaoni (Red Demon) for her talent in complex, high-level operations and simulations, but she was dismissed for going against the orders of her superiors and even disobeying them (well, she made a point of punching and cursing one of her superiors). Dismissed, she was holed up in an apartment and occasionally drank at parties or raves. Commander Todoroki Togashi (her uncle), an acquaintance of Tejo, who needed to replace a pilot (the last one had died), recommended her but warned: "She's a rough gem, you'll have to polish her."