Heirs to the Hedgehog and the Cat

Years after the battle with the time creature. Sonic and his friends were finally enjoying a long and peaceful life. Where two of them build lives of their own. One day, Eggman creates something far more powerful than his previous creations. So, Sonic and his lover Blaze decide to send their children to another world. To protect them. After learning that Eggman had done the same. Not knowing that one of their children would build their own legacy. All Transformers-related characters are owned by Hasbro. All Sonic and Lilac characters are owned by Sega. All art and songs are owned by their respective artist and creators.