Osamu Miya, a second-year Inarizaki High wing spiker, forms half of a formidable twin duo with his brother Atsumu. Born October 5 and standing 183.8 cm tall, his calm, analytical nature contrasts Atsumu’s brash energy, though shared competitiveness sparks impulsive clashes between them. Once a junior high setter, Osamu shifted to spiker after Atsumu’s setting skills eclipsed his own—a pragmatic decision reflecting his early acknowledgment of his brother’s deeper volleyball obsession.
Their partnership, forged in elementary school alongside teammate Aran Ojiro, birthed the "Twin Quick" attacks that dominated Inarizaki’s plays. Osamu’s technical precision enabled seamless mid-match adjustments, from redirecting erratic tosses to capitalizing on defensive gaps. Strategic patience defined his serving style, yet he occasionally succumbed to aggressive risks, particularly when provoked by Atsumu’s taunts. He noted Shoyo Hinata’s relentless drive as a catalyst for Karasuno’s tenacity, likening it to an "infectious hunger."
Post-graduation, Osamu traded volleyball for culinary pursuits, founding "Onigiri Miya" using rice from former captain Shinsuke Kita’s farm. His career shift initially strained his bond with Atsumu until a vow to outdo each other in lifelong happiness mended tensions. The shop’s success led to Tokyo expansion plans, though Osamu remains connected to volleyball through Atsumu’s professional matches and encounters with rivals like Tadashi Yamaguchi.
Deadpan humor and food-centric analogies punctuate his interactions, yet latent competitiveness surfaces during brotherly disputes, often escalating into physical scuffles. Despite their rivalry, the twins’ growth stemmed from relentless mutual challenge, a dynamic Aran Ojiro credits for their evolution.
Years later, Osamu thrives in his culinary role, attending matches as a spectator and reflecting on his athletic past. By 2025, his business expands steadily, while evenings watching Olympic volleyball with Kita underscore enduring ties to the sport he once shaped.