Go! Go! Loser Ranger!

Go! Go! Loser Ranger! Synopsis: The villainous army of evil unexpectedly materialized thirteen years ago to assault Earth from their massive floating castle ten thousand meters above the ground! The evil army poses a severe threat to humanity due to their ability to revive, which grants them immortality. Using their supernatural abilities and Divine Tools as weapons, the Dragon Rangers, also known as the Divine Dragon Rangers, defend us against these intruders and never stop fighting to keep us secure! The Villainous Army's attack! The Dragon Keepers' watchfulness! Will they be successful in conquering...? Discover in the once-in-a-lifetime action-packed superhero series! (Source: Mangamonster.net)