The Family Rivals (Ben 10 X Male Reader)

Ever since my family has known the Tennysons, we've hated each other for generations, and at this point we don't know why. It's as if we're genetically designed to hated each other no matter what. So when I gained a special device that let me turn into Aliens, and Ben Tennyson got an inferior version, let's just say our family rivalry evolved into something far different. Now, we are constantly fighting each other with our Alien forms for several different reasons. We do team up when needed, but it rarely lasts. Plus, I have my own problems to deal with. Magical monsters, arranged marriages, and a lot more...Still, it beats Summer School.