Books in the Go, Go, Loser Ranger! series in order

"Thirteen years ago, the Nefarious Monster Army invaded Earth, but humanity's great protectors, the Dragon Keepers, defeated them in a single year! Every Sunday since, the monsters have been forced to act out humiliating defeat after defeat in front of the unsuspecting public.Determined to change this, a single monster, D, infiltrated the Ranger Force he help of the mysterious Ranger, Yumeko Suzukiri, D managed to seize one of the divine artifacts--the only weapons capable of permanently killing the monsters' immortal bodies! However, D's subsequent encounter with the Dragon Keepers led to his unfortunate end, so who will stop them now...?"--

"It's the last day of the Ranger promotion exam. After the top five elite recruits joined hands against the rest, D rallied those who were left behind to form a team of his own...and they have a secret weapon that just might even the playing field, the "Burst Form"! A fierce battle breaks out over the "keys" that will determine which five candidates will advance, and convictions are put to the test. Will D finally be promoted to a full member of the Rager Force and take his first steps toward defeating the Dragon Keepers?"--Rear cover.

Attention kaiju and sentai fans! From the creator of The Quintessential Quintuplets comes a new "anti-ranger" action-comedy that'll make you root for the alien invaders! Perfect for fans of Kaiju No. 8 and Power Rangers. WHO WILL BE TAKEN NEXT? D succeeded in making it through the final exam and achieved his goal of being promoted to a full-time Ranger... Even better, he defeated the Blue Keeper and stole his divine artifact. If only he didn't have to share credit with the boss monster, Peltrola. Now, as D enters the Green Squadron with his fellow recruit, Usukubo, he prepares to take down a new target: the Green Keeper! What's more, there seems to be another boss monster lurking around the neighborhood. It's time for a brand new undercover op. If D is discovered, it's over... And what's this about a series of mysterious disappearances around town?

"While pursuing a lead on the mysterious disappearances, Green Squadron managed to infiltrate the "Academy of Dreams." Though Usukubo and Hisui have both fallen under the boss monster Magatia's spell, due to his ignorance of school life, D held onto his sanity...but got himself expelled! Not so easily thwarted, he snuck back in, determined to shatter the illusionary world. Will he manage to defeat Magatia and force those who have retreated into a fake utopia to face reality?"--Provided by publisher.

"The Green Squadron has defeated the boss monster Magatia. In the process, the Green Keeper's identity was revealed to be...the mysterious informant Chidori! D has now set his sights on a new target and soon receives an opportunity to assassinate him by teaming up with Suzukiri. However, after tailing Chidori all the way to his home, only to nd a happy family waiting there, will D be able to maintain his resolve?"--Provided by publisher.

"D ga snally succeeded in assassinating Red, yet why has there been no response from the Ranger Force? And why is the Sunday Showdown happening like normal? Everything might seem ga sne, but the Rangers are struggling to deal with the elusive kaiju and the citizens' mistrust is growing. Support for the Monster Protection Society is on the rise, and the situation soon spirals out of control when the public begins to take sides in the growing con gb sict. Where will D's one-monster war take him next--who will he side with?"--Publisher.