My childhood friend's older brother is so high-spec that it's kind of scary.

"Hey, Kanna. The other day, you said you liked strong boys, right? So... I became a strong boy too. Do you like me now?" Saying that, the one who appeared before me—a third grader in elementary school—was a strikingly beautiful five-year-old older brother who lived in the neighboring house, leading along a group of scary-looking men. The main story is complete. The spinoff/side stories have begun serialization with turtle updates. --- I wrote this as a way to pass the time. I'd be happy if you could read it to kill some boredom.