Detective Conan: Bizarre Cases, Face Cake

In the world of Conan, a dessert shop that is open late at night always emits a strange aroma. A seemingly ordinary strawberry cake has been involved in many unsolved cases. With the intervention of Mouri Kogoro, the coded songs hummed by the store manager gradually intertwined into a web - who is waiting for the trial before dawn? (Contains Easter eggs from Conan's perspective, short fast-paced reasoning)