Mega Man Star Force(2006)

In the year 220X, a mourning 5th grader named Geo Stelar (Subaru Hoshikawa) is given an invention made by his late father called a visualizer, which allows him to see radio-wave-based aliens, which are trying to destroy the world. Together, with an alien named Omega-Xis (War-Rock), he fights to save the earth as Mega Man (Rockman).