Tutor: Mana Izumi Gal

“A tutor ?” The father’s lip curled. “She looks like she sells fake handbags in Shibuya.”

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.

Later, as Mana slipped her platform boots back on, Kaito stopped her at the elevator.

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 Izumi Gal Tutor

“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.”

When he wrote the final answer, his father said nothing. He simply walked to his study and closed the door.

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. “A tutor

Mana smiled, pulled out her pink gel pen, and wrote a single equation on the whiteboard—one so elegant and cruel that it had stumped PhD candidates. Then she handed the pen to Kaito.

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.

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. He was also failing advanced calculus

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.

She began to sketch not numbers, but a story. A curve that danced. A variable that “felt lonely” and needed a substitution to keep it company. She gave the integral a personality—a nervous wreck that needed to be soothed by a trigonometric identity.