Akuru Akutsu

Often serving as the series' reluctant straight man, this brilliant yet abrasive high school student spends his days navigating the chaotic whims of his childhood friend and neighbor, Yoshiko Hanabatake. While he prefers focusing on his studies, he is frequently dragged into her ridiculous escapades, often responding with blunt insults or physical frustration. Despite his antisocial nature and prickly attitude toward most classmates, he maintains a rare, functional bond with Sayaka Sumino and Dog.