I Became a Legend a Decade Later After Telling My Comrades to Leave Everything to Me and Retreat First

A brief description of the manga I Became a Legend a Decade Later After Telling My Comrades to Leave Everything to Me and Retreat First: The Hero’s party was attacked by a large group of powerful devils. The party will no doubt be annihilated if this were to go on. One member of the party, the strongest mage, Rakku decided to stop the enemies in their tracks.