The Changing Hero of Canterlot!

That's right! Our first crossover continuation of @Blazeinferno25's MLP x Ben 10 story.
Equestria is a land filled with peaceful ponies and ruled by two princesses and their new prince and princess. The prince, a legendary changeling alicorn, sought to protect all of his friends due to a vow. However, there is a parallel world outside Equestria, where eight friends reunite and form a new magic of friendship after they had broken apart. The story begins with a mysterious watch-like device called the Omnitrix, a family heirloom created millennia ago. The device consolidated the power of several species from distant planets.

(Y/N), a fifteen-year-old is curious about the device and tests it in a field. He discovers that it consolidated the power of several species from distant planets

Upon arriving at Canterlot High School, (Y/N) is introduced to two girls who seem familiar to him. (Y/N), a new boy and asks the girl for directions. The two girls chuckle at the request and remind (Y/N) that they are never too old to receive a helping hand.

(Y/N) has to decide what classes to take, one of them being English and Math. The other three have no clue, leaving one more period to decide. Chemistry is not an option for (Y/N).