The eldest of Hina Urashima's two daughters, Yoko Urashima used to look after the residents in the Hinata House's annex as well as running the Hinata Café.
Yoko married in her late twenties and gave birth to Haruka. Soon afterwards she fell ill and passed away. After her death her husband took Haruka and moved away from Hinata, however after college Haruka returned and took over her mother's job of running the Hinata Café.
Yoko's spirit resides in the Abandoned Annex where she used to look after the ill.
- Yoko only appears in the novel Love Hina: Mystery Guests at Hinata Hotel.
- Haruka is said to look a lot like her mother, she is also said to resemble how Hina looked during her youth.
- When he was four years old, Keitaro once wondered into the Annex and encountered Yoko's ghost; although at the time he mistook her for Haruka. They would meet again when he and the Hinata residents were trying to stop a group of treasure hunters; resulting in Yoko personally appearing to save them.