A Crossover Fanfic: Searching for Iason

The ending of Ai no Kusabi is tragic. Xiao Yi came up with the idea of giving those two a happy ending a long time ago. Riki and Lason's love can only be connected by the bond between pet and owner. But even after the two run toward death together, their story doesn't end there. After an unknown amount of time, light returned to Riki's eyes. A nameless woman seemed to possess powers even greater than Jupiter's. She told Riki that she had brought Lason back to life. Unfortunately, the woman had no intention of letting them reunite so soon. She split Lason's soul into several pieces and scattered them across different worlds. If Riki wanted to reunite with Lason, he would have to find the person carrying a piece of Lason's soul among the countless people in each world, using only his own strength, and put the pet ring from their past on that person's left ring finger. And so, in order to see Lason again, Liki set off on a journey. Game Rules: In each world, Liki gets three chances to make a choice. If he still hasn't chosen correctly after three attempts, the piece of Lason's soul in that world will be destroyed. There are no hints before the first choice. After that, each wrong choice earns a hint. In theory, the mission time in each world is unlimited. However, if the target dies, the mission is considered a failure.