Hōjō Satoko’s life intertwines trauma and resilience, marked by pivotal tragedies and fractured bonds. Born June 24, 1971, her childhood instability stemmed from her mother’s volatile relationships, eroding trust in parental figures. Her sole anchor was her brother, Satoshi, whose presence tempered her isolation. During the 1980 Watanagashi Festival, a defining moment unfolded at Shirakawa Park: depending on the timeline, Satoko either pushed her paranoid parents off a cliff in self-defense—their minds eroded by advanced Hinamizawa Syndrome—or witnessed their accidental deaths from a collapsing railing. Hospitalized at Irie Clinic post-tragedy, she narrowly escaped becoming a terminal research subject through Dr. Irie’s C-103 treatment, which stabilized her condition via regular injections. Placed under the guardianship of abusive relatives, Hōjō Teppei and Tamae, Satoko endured further torment until Satoshi murdered Tamae to protect her, then vanished. She found refuge with her friend Furude Rika, forging an inseparable bond. Satoko’s personality blends mischievous energy with hidden scars. She devises elaborate traps targeting Maebara Keiichi, masking her trauma with playful antics, yet her sharp intellect emerges in crises—mapping escape routes or strategizing under duress. Her familial longing surfaces in nicknames like “Nii-nii” for Keiichi and “Nee-nee” for Shion Sonozaki, reflecting her desire for kinship. Post-Matsuribayashi-hen, she evolves into a time-weaving antagonist, gaining the ability to traverse fragmented timelines with Rika. When Rika departs Hinamizawa for St. Lucia Academy, Satoko’s fear of abandonment festers. Accepting a looping power from the entity Eua, she orchestrates endless tragedies to bind Rika to their shared past, culminating in violent confrontations where she repeatedly kills Rika, twisting their bond into obsession. Decades later in *Rei*, she appears stabilized as a married shop owner in Hinamizawa, raising a daughter named Sakiko. Yet her traumatic past lingers, manifesting in strict parenting to shield Sakiko from vulnerability. Satoko’s arc traverses cycles of dependency and self-destruction, her manipulation of time loops underscoring the corrosive weight of unresolved trauma and the paradox of clinging to connection through cruelty.