Takagi, a high school teacher entangled in a clandestine sexual relationship with his 15-year-old student Tomie Kawakami, faces a crisis during a mountain school trip when Tomie confesses her pregnancy. The revelation sparks a violent confrontation with her boyfriend Yamamoto, culminating in Tomie’s fatal plunge from a cliff. To evade justice, Takagi masterminds a cover-up, coercing the class to dismember her corpse into 42 fragments and scatter the evidence. He personally ensures her demise by stabbing her with scissors before distributing the grisly remains among the students. When Tomie mysteriously resurfaces alive, Takagi questions her identity until her allusions to their shared past trigger his mental collapse, resulting in his institutionalization. Later accounts depict an unstable yet complicit Takagi aiding Tomie’s twisted experiments to harness her regenerative abilities. He implants a sliver of her kidney into a transplant recipient, unwittingly spawning multiple Tomie clones as the organ mutates. His actions escalate as he disseminates “Tomie seeds” across a town, accelerating her exponential proliferation. Though morally compromised and consumed by self-preservation, Takagi’s motivations remain shrouded in ambiguity. His trajectory shifts from complicit educator to a pawn ensnared in Tomie’s supernatural cycle of regeneration and manipulation. Unsubstantiated speculation hints at a connection to a later figure, Satoru. His marital status compounds the complexity of his illicit entanglement with Tomie, while his psychological unraveling peaks in a disappearance mirroring the chaos she generates. His actions paint a portrait of guilt, fear, and obsession, reflecting a psyche tormented by the repercussions of his choices and Tomie’s relentless influence.