A Error in the System: Kirihina Soulmate Au

At 15 everyone gets a soulmate. What if the system Makes a mistake and gives you the wrong soulmate. That's what happened to Kyoko and Aoi. Aoi got Sakura. And Kyoko got Celestia. They loved their soulmates. One day while Kyoko was investigating a case she reunites with Aoi. This Is a AU where the killing game never happened.