Takagi

Takagi is Tomie's former teacher. In order to conceal his affair with Tomie, who demanded he leave his wife, he orchestrated her dismemberment by the class after she accidentally fell from a cliff and was presumed deceased. After Tomie comes back, Takagi goes insane and spends years trying to track her down, occasionally aiding in Tomie's plots but never being regarded as someone of importance by her.