Is the main character (Kal-el) of The Pilot's Love Song related to Superman? The main character of Toaru Hikuushi e no Koiuta is named Kal-el. This immediately made me think of Clark Kent's birth name of Kal-el from Superman. Is there any relationship between this work and Superman?
No. His name is a portmanteau of his real first and last name, カール (kaaru) and イール (iiru), respectively. In actuality, he is the first Prince of a certain Empire...