TV-Series
Description
Isuzu Soma, known as Rin, embodies the Horse of the Chinese Zodiac within the Sohma family curse, transforming into a black horse if embraced by the opposite sex or under extreme stress. She stands 165.5 cm tall with a slender build, fair skin, and dark brown eyes nearly appearing black. Rin initially possessed hip-length dark hair, later cut unevenly to her nape by Akito as punishment. A prominent scar marks her back from being pushed out a window by Akito. Her wardrobe frequently features dark, Gothic-style clothing, a rebellion against her parents' earlier efforts to dress her like a doll.

Rin's childhood presented a facade of parental affection masking profound dysfunction; her parents pretended devotion to avoid acknowledging their resentment toward her cursed existence. Questioning their happiness shattered the pretense, leading to neglect and physical abuse that hospitalized her. During a hospital stay, her mother explicitly disowned her, stating an inability to love her. This rejection instilled deep self-blame and a belief she was inherently "warped" and unworthy of love. Abandoned, Rin moved in with Kagura Sohma's family. She developed psychosomatic health issues, including stomach ulcers and fainting spells, worsened by stress and poor eating habits. Rin avoids eating around others except Hatsuharu Sohma and later Tohru Honda. Trauma also made her a light sleeper, a symptom of hypervigilance.

Fiercely independent, stubborn, and emotionally guarded, Rin masks deep-seated self-hatred and fear of burdening others. She isolates herself, believing kindness makes people vulnerable and her "darkness" could harm them. Viewing herself as a leech draining kind people, she rejects help. Despite her abrasive exterior, Rin exhibits intense loyalty and self-sacrifice toward loved ones. Her relationship with Hatsuharu Sohma began in youth through mutual protection. As children, Rin accompanied Haru during forbidden visits to Yuki, devising excuses to shield him. They later developed a romantic and sexual relationship, which Rin hid to protect Haru from Akito. When Akito discovered them, Rin claimed sole responsibility, resulting in Akito pushing her out a window. Hospitalized, Rin broke up with Haru without explanation, falsely claiming lost love to prevent his punishment.

Driven by guilt and a desire to free Haru from the curse alone, Rin refused assistance, especially from outsider Tohru Honda. She sought information from Kazuma Sohma, Shigure Sohma, and Ren Sohma. Ren manipulated Rin into stealing a black box from Akito's room, promising curse-breaking secrets. Caught by Akito, Rin was imprisoned in the Cat's confinement room and had her hair cut. Freed by Kureno Sohma, she escaped the hospital in a daze, collapsing on the street where Haru found her. They reconciled, with Haru insisting she stop isolating herself. Rin then recovered at Kazuma's house.

During recovery, Rin gradually accepted support. Tohru Honda's persistent care during an illness forged a bond, leading Rin to view Tohru as a mother figure. She grew fiercely protective of Tohru. Rin also began relying on Haru, promising not to face challenges alone again. After the curse broke, Rin struggled to move past her trauma. Unlike other zodiac members, she could not forgive Akito for the abuse, confinement, and physical harm. She expressed frustration that her emotional pain persisted despite the curse's end, having hoped it would vanish. Rin acknowledged lingering anger and discomfort with Tohru's friendship with Akito, fearing her unresolved resentment reflected her "darkness." She channeled emotions into art and maintained connections with Haru, Kagura, Hiro, and Momiji, indicating slow steps toward healing. In Fruits Basket Another, Rin married Haru and had twin children, Sora and Riku, signifying long-term stability.