Sentai Daishikkaku  

Go! Go! Loser Ranger!, 戦隊大失格, Ranger Reject, ขบวนการกำมะลอ, No Longer Rangers

Thirteen years ago, an army of evil creatures invaded earth. but humanity's brave defenders, known as the dragon keepers, managed to defeat them in just one year! since then, every sunday, these monsters have been forced to perform humiliating defeats for all to see. a determined monster named d decided to join forces with a mysterious ranger named yumeko suzukiri and seized one of the only weapons that could permanently kill the monsters' immortal bodies. unfortunately, d met his end when he encountered the dragon keepers. now, who will stop these creatures from causing any more harm?