Main character of Senpai Annoying Kohai, the "senpai" of the story.
Big guy, big mouth, big heart. A man with imposing physique - while he is taller no more than one head, he is almost double as wide as any average character and physical strength matching his body. Brutally honest: speak his thoughts and opinion aloud and in face. Harumi being strong extravert - often seeks a company to hang out, never being shy around people, has a loud laugh. He is taking a great care towars his junior, Igarashi Futaba, and has "tidal lock" sync with her - has high chance to encounter her in random places.
While he is very sociable, he is oblivious to current social standarts and trends. Often get punched by Futaba for his brutal honesty or saying too much. It's just his head is that thick.
Appearance: Tall, burly physique. Short black hair, bristle on chin, thick eyebrows, consticted pupils.
Associated color: 'Pomp and power' purple
Associated animal: bear