Three years have passed and Natsuo, Tomoya, and Yuya are living their lives as a loving throuple. They've even taken their relationship a step further and gotten married. Unfortunately, while enjoying a tropical vacation, Tomoya and Yuya find out that their strict, old-fashioned grandfather has caught wind of their arrangement with Natsuo and is threatening to break them up. Meanwhile, a new omega arrives on the scene and claims they are none other than Tomoya’s fated mate! Can Natsuo and the twins withstand these new threats to their life together?