TV-Series
Description
Satoko Hōjō, a central character with intricate development across multiple stories, endured childhood instability from her mother's frequent marriages and divorces, resulting in repeated surname changes. Distrusting her stepfathers, she conflated their actions into false abuse memories, culminating in a fabricated report against Mr. Hōjō that intensified village ostracism during the Hinamizawa Dam conflicts.

Her parents died ambiguously in 1980. The canonical Matsuribayashi-hen version depicts Satoko, suffering terminal-stage Hinamizawa Syndrome (L5), pushing them off a Shirakawa Park cliff due to paranoid delusions of their intent to murder her. Mio<tsukushi-hen offers an alternate account where their deaths were accidental, caused by a corroded railing collapsing during an embrace. Hospitalized at Irie Clinic afterward, she narrowly escaped vivisection as a research subject when Dr. Irie developed the C-103 treatment.

Placed under the abusive guardianship of uncle Teppei Hōjō and aunt Tamae with her brother Satoshi, she was left alone after Satoshi vanished following Tamae's murder—an act committed to protect Satoko. She then resided with her friend Rika Furude. Despite academic disinterest, Satoko displays sharp analytical skills, like mapping school blueprints during crises, and a mischievous resilience expressed through elaborate trap-setting honed during stepfather pranks. Trauma surfaces in flinches at Teppei's anger and conflicted reactions to Keiichi Maebara's resemblance to Satoshi.

In Saikoroshi-hen's tragedy-free alternate reality, she appears cold and antagonistic toward Rika due to divergent lives and perceived slights. Gou and Sotsu depict her drastic shift: struggling at St. Lucia Academy, she feels abandoned by Rika's desire to leave Hinamizawa. After encountering the entity Eua, she gains fragment-looping powers, orchestrating events to trap Rika in violent cycles—triggering allies' Hinamizawa Syndrome and manipulating timelines to ensure Rika's repeated deaths. Her eyes turn red during looping, signaling transformation.

This "witch Satoko" persona suppresses human emotions to achieve goals. She re-enacts traumas—self-inflicting bruises and inducing vomiting—to manipulate Teppei in Tatariakashi-hen. Internal conflict emerges through flinches at his rage or tears during Rika's pleas, revealing a fractured psyche. Following a century-long battle across fragments, she reconciles with Rika, agreeing to attend school together in a new timeline.

The Gou/Meguri manga delves deeper into her psychological turmoil, emphasizing self-harm and re-traumatization as manipulation tools. In Rei, set 35 years post-original events, she marries Kisaku Kimiyoshi, runs a souvenir shop, and has a daughter named Sakiko. Connections to Umineko no Naku Koro ni suggest her potential evolution into Lambdadelta, the Witch of Certainty, due to shared traits like looping abilities and blonde hair with red eyes.