Dragon Ball: The Dimensional War

(Invincible protagonist, not brainless, exhilarating battles) An ordinary high school student plays video games late at night and somehow crosses over to the Dragon Ball world, becoming Vegito before the fusion has been undone. Then, without warning, he's transported to a different-dimensional space. There, he meets Bardock, who survived the destruction of Planet Vegeta and became a Super Saiyan; Cell, who absorbed all the Z Fighters; Goku and Vegeta from the GT timeline; Buu, who devoured all the Z Fighters; and Frieza, who became the true emperor of the universe. What will happen when they collide?