Yukari Godai, Yusaku Godai's grandmother, resides with his parents in the countryside where the family runs a restaurant. She makes periodic visits to Yusaku in Tokyo at Maison Ikkoku, though her energetic and meddlesome nature discomforts him. The tenants Akemi Roppongi, Hanae Ichinose, and Yotsuya enthusiastically welcome her presence, frequently joining her in drinking sessions marked by revelry. Despite this, her motivations toward Yusaku remain genuinely caring and constructive, unlike others who torment him.

She demonstrates sharp perceptiveness about Yusaku's personal life, quickly identifying his romantic interest in Kyoko Otonashi, the boarding house manager. Her schemes actively aim to facilitate their relationship, strategically supporting Yusaku's efforts to win Kyoko's affection. This contrasts with other tenants' interference and displays greater effectiveness and sincerity than characters like Hanae Ichinose. Her sharp intuition even allows her to outmaneuver Yusaku's romantic rival, Shun Mitaka, in situations involving Kyoko.

Her personality combines a boisterous, fun-loving demeanor with deep familial concern. She actively worries about Yusaku's academic struggles and prolonged bachelorhood, channeling this anxiety into efforts to stabilize his future. While her visits disrupt Yusaku, they often catalyze key developments in his relationship with Kyoko. Her consistent portrayal across the series emphasizes her role as a familial figure whose interventions, though occasionally overwhelming, stem from affectionate support for his happiness and romantic fulfillment.