Mackenzie represents Shiho in this universe.

Mackenzie at first glance seems to be a quiet and reserved girl who rarely talks to anyone and doesn't smile much. In fact, the only person she lights up around at school is Scarlett. She lacks confidence to a significant degree, thinking her volleyball skills are her only valuable attributes, and that this is "all she had."

In reality, she is an extremely stressed and traumatized teenager because she was one of the most frequent victims of Fyffe's abuse; he sexually harasses, assaults, and spikes volleyballs at her any time he sees fit. She would endure all of this and more for the sake of volleyball. Eventually, her friend Scarlett outright begins to avoid Fyffe's sexual advances; as a consequence, he declares he's going to strip Mackenzie of her starting position.