Kenji Hishiki serves as the protagonist in the 1987 film "Aitsu to Lullaby: Suiyobi no Cinderella." He travels by motorcycle to Hakone Pass with his girlfriend Tomomi on a Wednesday morning. Noticing other riders congregated there, Kenji pauses to investigate. Fellow rider Hayase Junichi shares local lore about a legendary female driver dubbed Wednesday Cinderella, who navigates the area in a white Porsche each Wednesday. This revelation ignites Kenji's fascination with the enigmatic figure. He soon participates in races against Wednesday Cinderella, encounters escalating peril beyond anticipated risks, and exhibits charisma throughout these events. Kenji's dynamic with Wednesday Cinderella—revealed to be named Sonoko—anchors his narrative, with Sonoko being one of the few characters alongside Kenji to receive substantial development.