Satoko is the daughter of public prosecutor Doukurou Marube, the current owner of the clock tower. Despite being underage, she sometimes drives her father around. After Taichi and Tetsuo stage an accident while she is driving, and Satoko drives away from the scene, the two blackmail her to get Taichi into the clock tower. She is fearful of her father and shy around men, as Doukurou hasn't allowed her much contact with them.
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