Monsters And Aliens! (Ben 10 Male Reader X Rosario + Vampire)

Y/N Tennyson, wielder of the Omnitrix proves himself worthy of its power at the age of 10 but he soon retires at 11 years old to live a normal life. A couple of years later he dawns its power again but this time it is different for him. Y/N soon finds himself in Yokai Academy which is a school full of monsters. To Y/N this won't be as challenging since he dealt with bounty hunters, a ghost, a punk, and a tyrant. But his greatest challenge of all is keeping the Omnitrix hidden and tolerate some girl problems.

I don't own Ben 10 nor Rosario + Vampire