Hayase Junichi, a fellow motorcycle rider, encounters protagonist Kenji at Hakone Pass. He shares the local legend of Wednesday Cinderella, a highly skilled female driver who navigates the pass in her white Porsche every Wednesday. This tale immediately ignites Kenji's fascination and drives his determination to find and challenge the mysterious driver. Hayase's key function is introducing this central legend, directly motivating Kenji's subsequent actions.