I was half-listening to the teacher when it happened—a faint but unmistakable fart, followed by a subtle shift in the air. The girl in front of me, Mika Fujimoto, stiffened but kept writing.

I leaned forward and whispered, "Judging by the sound, that was a low-pressure release. Fiber-heavy breakfast? Oatmeal, maybe?"

Mika tensed, slowly turning to glare at me. "Excuse me?"

I shrugged. "Just an observation. It’s biology."

Her face turned red as she whipped back around. For the rest of the lesson, I felt her occasional glares. Maybe I had gone too far?

Later, as school ended, Rika Tanaka approached me with a smirk.

"You're pretty knowledgeable about… digestion. Wanna join our club?"

I hesitated. "What kind of club?"

She grinned. "You'll see."

Curious, I followed her to an empty classroom. Inside, a group of girls sat around a whiteboard covered in food charts. Mika was there, arms crossed.

Rika spread her arms dramatically. "Welcome… to the Fart Club."