The Buxom Emperess of Dimensions

Takes place in Sonic Unleashed

An interdimensional buxom emperess flung Sonic, Shadow, Goku, Vegeta, and Issei into another dimension in order to control them and conquer their worlds. Problem is, Rias took notice of Issei flung in there and went in there as well. Will the six heroes stop the conquest of their dimensions before the Emperess gains enough power to rule? Read and find out!