Bima Satria Garuda

Ray Bramasakti did not expect that while on an excursion with Rena, a meteor fell near where they were sitting. From within the meteor emerged an alien creature who was being surrounded by a horde of monsters.

Ray tried to help the person escape, but they were eventually caught. It was at that moment that the alien creature gave Ray the power to change. Become a superhero named Bima Satria Garuda.

(Source: MangaUpdates)