“Told ya. Gyaru magic.”
Mana Izumi was not your typical after-school tutor. For one thing, her uniform skirt was three inches shorter than regulations allowed. For another, her bleached-blonde hair was usually piled into a messy, gravity-defying bun, and her nails sparkled with enough rhinestones to blind a pilot. She was a gyaru —a Japanese gal, all tanned skin, loud laughter, and a total disdain for the stuffy academic world.
But the real trouble started a week later. Kaito’s father, a stern parliament member, walked in early from a business trip. He found his pristine son on the floor, surrounded by pink sticky notes, laughing—actually laughing —as Mana taught him calculus using the rhythm of a J-pop song.
By day, she slouched in the back of Tokyo’s most elite prep school, acing exams she barely glanced at. By night, she worked at a dingy izakaya to support her single mother. But her secret gig, the one no one at school could ever know about, was tutoring. Mana Izumi Gal Tutor
“I don’t understand,” Kaito said, staring at the differential equation like it had personally insulted his ancestors. They were in his family’s sterile, minimalist penthouse. “The limit approaches infinity, but the function… it just breaks.”
Mana didn’t flinch. She’d heard worse. Instead, she slowly pulled a folded paper from her bag—her own university entrance exam results. She placed it on the marble table. Perfect score. Mathematics. Top 0.1% in the nation.
“Sir,” she said, her voice calm, her Shibuya-gal accent softening into something sharp and precise, “your son doesn’t need another rulebook. He needs someone who can translate the universe into a language he understands. Today, I taught him differential geometry. Last week, I taught him that his anxiety around numbers comes from your pressure, not his lack of talent.” “Told ya
Mana pressed the elevator button. “Because the world only listens to you if you’re loud or if you’re rich. I’m not rich. So I chose loud.” She stepped inside, then turned. “Besides, someone has to teach the smart kids how to have fun. See you Thursday, prez. We’re doing imaginary numbers. Bring bubble tea.”
Mana, sitting cross-legged on his white leather couch with her platform boots kicked off, snorted. “You’re thinking like a robot, prez. Math isn’t about rules. It’s about vibes .”
“I did it,” he whispered.
Kaito was the student council president. He wore glasses, spoke in perfect keigo (honorific speech), and had a GPA so pristine it could have been encased in museum glass. He was also failing advanced calculus.
Kaito took a breath. And for the next fifteen minutes, in front of his disapproving father, he solved it. Step by step. Not as a robot. But as a person who had finally learned to dance with numbers.
“Prove it,” the father said quietly. “Give him a problem. Right now.” For another, her bleached-blonde hair was usually piled
Something clicked. For the first time, Kaito didn’t see a wall of symbols. He saw a puzzle. A conversation. His pen moved. He found the anti-derivative. Then the limit. Then the answer.
