Go! Go! Loser Ranger! manga volume 9 features story and art by Negi Haruba, the creator of The Quintessential Quintuplets.

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 find a happy family waiting there, will D be able to maintain his resolve?

Go! Go! Loser Ranger! manga volume 10 features story and art by Negi Haruba, the creator of The Quintessential Quintuplets.

D finally 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 fine, 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 conflict. Where will D's one-monster war take him next—who will he side with?

Go! Go! Loser Ranger! manga volume 11 features story and art by Negi Haruba, the creator of The Quintessential Quintuplets.

The stage has been set for the greatest battle royale in the history of the Ranger Force. On one side, the entire Ranger Force has been mobilized to deal with the threat of the kaiju, and on the other, the Directors of the Monster Protection Society pose a new threat with familiar powers! Caught between these two powerful forces, unwilling to let either side prevail, is Fighter D, the self-proclaimed enemy of all hope. From now on, D has decided to fight for his own sake and no other!

Go! Go! Loser Ranger! manga volume 12 features story and art by Negi Haruba, the creator of The Quintessential Quintuplets.

Thirteen years ago, an evil army of mysterious alien monsters invaded the Earth, but the great protectors of mankind--the Divine Dragon Rangers--rose up to stop them! To this day, the fate of the Earth hangs in the balance as the fierce struggle continues to unfold! Or does it? What new revelations will be uncovered in this latest volume?

Go! Go! Loser Ranger! manga volume 13 features story and art by Negi Haruba, the creator of The Quintessential Quintuplets.

Thirteen years ago, an evil army of mysterious alien monsters invaded the Earth, but the great protectors of mankind--the Divine Dragon Rangers--rose up to stop them! To this day, the fate of the Earth hangs in the balance as the fierce struggle continues to unfold! Or does it? What new revelations will be uncovered in this latest volume?