Rina was a young Japanese woman with a square face, typically seen in a yukata, and first having a traditional hairstyle, but then changing it into a ponytail afterward.
Much like her original counterpart, she is described as a loving & caring wife. She is also seen as faithful during her peculiar ailment as she trusted Johnny to save her. While she was cured by the corpse parts, she showed great concern for her son George II, as it is revealed that he contracted the disease as well.
After the events of Steel Ball Run, she meets Johnny Joestar on the ship crossing the Atlantic back to America with her father Norisuke. The two fall in love and eventually marry and live together on a ranch. Years later, Rina comes down with an incurable illness causing her to lose her memories and eventually turning her skin stiff and folded like origami. Johnny decides it is best to bring her to Japan to spend the last few days of her life in her hometown of Morioh. He eventually travels back to New York to re-obtain the Saint Corpse Parts as a way of curing his wife's illness. After she is cured, the disease passes to their son George II. Johnny finally uses Tusk to take it upon himself, sacrificing himself for the sake for his family. Afterwards, she is charged with Johnny's murder, but is released due to lack of evidence. She is not seen again, but it is assumed that she raised George as a single mother in Morioh for the rest of her days.
- She is the SBR counterpart of Erina Pendleton.
- Like Erina, she raises her child by herself after her husband dies.
- Although she is introduced and named in Part 8 as Johnny's wife, she is first seen in Steel Ball Run alongside her father greeting Johnny in its last chapter, foreshadowing the events described in JoJolion.