Ushikō-san, Komatsu-san’s steadfast friend since their high school baseball days, frequently visits his glassblowing workshop. A seasoned entrepreneur with a thriving yet unspecified enterprise, his travels yield colorful anecdotes about clients and adventures. Each arrival carries a lingering food aroma that captivates Muco, prompting playful exchanges as he lures her with snacks and gadgets.

Their bond traces back to shared summers on the baseball field, cut short by Komatsu-san’s career-ending shoulder injury. Years later, Ushikō-san reignited his friend’s purpose by gifting a handmade glass piece, unveiling Komatsu-san’s calling. Time reshaped Ushikō-san’s physique from a lanky, spirited teen into a portly, balding figure, his transformation humorously chalked up to snack indulgences and the march of years.

Quiet affection for Shinohara, their mutual friend, simmers beneath Ushikō-san’s jovial exterior, unnoticed by her yet fostering a gentle rivalry with Komatsu-san, who shares the admiration. Despite this tension, he remains Komatsu-san’s pragmatic ally, troubleshooting technology and managing workshop affairs. A fishing duel with Bouda reveals his cheerful competitiveness, amplified when Muco’s whimsical triumph punctures his pride.

As the story unfolds, Ushikō-san’s world widens through ties to Bouda’s daughter Renna and Dr. Mutō, the village vet. Though his personal evolution stays peripheral, his enduring loyalty and shared laughter with old and new companions echo the series’ celebration of community and timeless friendships nestled in rural life.