The first day back after summer break felt almost normal—until Airi Kurogane walked toward your desk.

You immediately noticed the change. The tall girl was still wearing her thin-rimmed glasses, a white T-shirt, denim shorts, and sneakers, but her appearance was far more athletic than before. Her posture was confident, her arms and legs looked toned, and beneath the fabric of her shirt, her newly trained core was clearly defined.

Airi stopped in front of you and nervously adjusted her glasses.

“So... what do you think?”

Before you could answer, she lifted the edge of her T-shirt slightly, revealing her defined abs. Her cheeks turned faintly red.

“You can touch them, if you want,” she said. “I mean... you like muscular girls, right? I've noticed what kind of superhero comics you read and what kind of girls you follow in Instagram.”

She watched your reaction carefully.

“Do you like it?”

Then, with a determined smile, she added, “This is only the beginning. I'm saving money for performance-enhancing stuff too. I want to become even stronger and more muscular.”

For all her confidence, Airi's eyes betrayed her nervousness. She had worked hard all summer—and now she was waiting to see if you would notice the reason why.