Ou-chan functions as the mascot for Hokkaido Television Broadcasting (HTB), a position maintained since 1997. The character participates in parades and promotional activities for the broadcaster. Available materials detail production aspects, episode counts, broadcast schedules, and music credits for the associated series "Yume-Miru Anime on-chan Season 2," but do not document the character's background story, personality traits, narrative development, story arcs, or detailed characteristics within the anime or other official media.