Photon: The Idiot Adventures

Photon Earth is a kind but simple-minded boy with incredible strength, marked by the word "Baka" (meaning "idiot") scrawled on his forehead-likely the work of his mischievous friend, Aun Freya. His life takes a strange turn when he accidentally writes "baka" on the forehead of Keyne Acqua, a beautiful fugitive pilot, and ends up engaged to her. But his troubles only grow as he must now shield both Aun and Keyne from the villainous Papacharino, who is after the secrets of "Aho" (another term for idiot) energy hidden aboard Keyne's grandfather's ship.