Invincible: How Does One Stop Being Vincible?

A somewhat ordinary 18-year-old wakes up as Mark Grayson before he awakens his Viltrumite powers. Now he has to live in the same house as a man who's likely to kill the Guardians of the Globe, go to school with his future wife(?) and live in a universe of all sorts of crazy stuff.

But at least having the combined power of two souls in one body is doing wonders for his physique, right?

(A/n - Please don't expect a perfect MC or a Gary Stu. He'll be better off than the original Mark but not to the point where this novel cross over into Wish Fulfillment. He's also still Mark, just with a little extra added. So he's still gonna be a Hero...albeit more decisive on how he deals with Villains.

He'll have an easier time learning his powers but he'll still get his ass beat at times. Nor will he perfectly remember every little detail from the show/comics. Expect the teenage MC to still be a teenager. There will be smut, at a point, so if that's not your thing, that's cool. It'll be pretty clear when it happens.)