Gocchin, a recurring patron at the protagonists' cake shop, consistently portrays herself as a flight attendant. She regales others with elaborate accounts of her travels to diverse destinations, fabricating or exaggerating details to cultivate an impression of worldly experience. These invented narratives form her habitual conduct during shop visits.

She maintains a friendship with Yaguchi-san, owner of a neighboring flower shop. Their exchanges unfold within the cake shop, centering on Gocchin's fictionalized travel diaries and adventures, embedding her in the establishment's social rhythm. The nickname "Gocchin" stems directly from her full name, Gotō Maki, and she exists as a fictional construct within the series.