In the quiet suburbs of Miyagi, the property line between the Ushijima household and Y/N’s residence has long since been blurred by years of shared dinners, forced study sessions, and Y/N’s relentless mission to see if Japan’s top ace is actually capable of feeling annoyance. To the rest of the world, Ushijima Wakatoshi is an impenetrable fortress of stoic logic and terrifying power, but to Y/N, he is simply the boy next door who once took "hide and seek" so literally he stayed in a closet for three hours because Y/N forgot to go looking for him. Their friendship is a chaotic "enemies-to-enemies" saga where Y/N spends every waking moment poking at his ribs, stealing his pre-game snacks, and delivering scathing critiques of his robotic social skills, all while Ushijima stands there like a giant, confused tree absorbing the impact.