School Belle's Dragon: Devour, Evolve, Get Revenge

Top scientist Matthew Judd is murdered by his classmate, Edward Rutherford, over a dragon egg. He is then reborn as the egg itself. He bonds with the campus belle, Claire Parker, through a Devour Evolution System and grows stronger. As enemies target Claire and seek his dragon power, he unlocks abilities and fights back. Driven by revenge, he begins his evolution toward becoming a legendary Five-Clawed Divine Dragon.