Ushikō-san recurs as a friend of the protagonist Komatsu-san, regularly appearing as a fellow patron at Komatsu's favored bar. He operates within a supporting role in Komatsu's social circle, frequently seen during group gatherings at local drinking establishments. His interactions help illustrate the community dynamics surrounding core characters. The character maintains a consistent presence in the ensemble cast across the series and adaptations, with no detailed personal backstory, family connections, or individual development arc provided. His role and background remain unchanged throughout the narrative.