In a world of infinite possibilities, how would you choose to live?

Thanks to Ray and his allies, the chaos in the city of duels is gradually abating. However, Giga Professor Franklin is far too obsessed with victory to let it end so easily... "Plan C!" he cries, as he plays yet another ace up his sleeve. But as Franklin stands proud, watching Gideon -- and the kingdom with it -- face utter destruction, a certain man moves out to show the Giga Professor the true meaning of the word.

After an unexpectedly challenging journey, Ray and his party finally arrive at Gideon, The City of Duels. The mere sight of the towering arenas and thriving fantasy townscapes is enough to instantly awe and enchant him. However -- like anything that stands tall and proud -- the city cast a great, dark shadow. The name of this shadow is the Gouz-Maise gang -- a loathsome band of cutthroats who turn their profit kidnapping children and demanding ransom. Ray, wide-eyed and innocent, was blissfully unaware of just how cruel the hyper-realistic world of Infinite Dendrogram would become.

The city of duels is suddenly besieged by one of the Dryfe Imperium's Superiors. Mr. Franklin, the Giga Professor. Both admirably cunning and incorrigibly heinous, the sadistic scientist sets his sights on throwing Gideon into utter Pandemonium. As luck would have it, Ray, Marie, and Rook are caught right in the middle of his malicious machinations. Though outmatched, outnumbered and outsmarted, the knights and Masters of The Kingdom of Altar don't hesitate to retaliate. They have the spirit, no doubt, but will it be enough to defeat the mastermind of Franklin's Game?

Who needs peace and quiet when you have games to play? Ray's climb towards becoming a super paladin continues, but it's never as easy as anyone hopes. Ultimate Boss Monsters, cursed costume pieces, and positively mad penguin are just some of the grinds in his way ⁠— and that's not even including the dread specter of gacha mechanics. Can Ray keep his in-game life ⁠— and dignity ⁠— intact, or is he just another cog in the machine of Infinite Dendrogram?

An AI looks into the past, at an event long before Ray Starling set foot in the world of Infinite Dendrogram. The unstoppable Tri-Zenith Dragon emerges from the mountains. It is a bringer of death, wielding a miasma of desolation in its wake. The citizens of Altar can do nothing but watch as doom descends upon them. However... There are three who may be up to the challenge. Three Masters who, if they managed to work as one, could stop the imminent desolation of the land they call home. But with so much glory to gain, what could they stand to lose?

"First published in Japan in 2018 by Hobby Japan, Tokyo."--Colophon.

You know how it is: show up, destroy a band of necromancers, defeat the boss, and go home to blow your winnings at the gacha spinner. Too bad Ray never has it so easy, and this time, the boss left behind a trap turning the local bandits into a gigantic, gruesome, grudge-powered gross-out monster - with his own soul at the center. Can Ray figure out how to take it out on his own? And wait, why's there a flashback?! Watch out for that truck!

It's time for the big guns... Thanks to Ray and his allies, the chaos in the city of duels is gradually abating. However, Giga Professor Franklin is far too obsessed with victory to let it end so easily... "Plan C!" he cries, as he plays yet another ace up his sleeve. But as Franklin stands proud, watching Gideon -- and the kingdom with it -- face utter destruction, a certain man moves out to show the Giga Professor the true meaning of the word.

Ray and his newly-formed alliance, Death Period, are readying themselves for a major dueling event when they're suddenly met with some surprising new recruits. The clan grows ever larger — large enough for them consider finding a home of their own. Luckily for them, Count Gideon seems to have a most unexpected offer in mind... Not all is well, however. In the gaol, Sechs and his collaborators begin putting the final touches on a heinous plan unlike any before... Past and present converge, revealing the long-held secret known only to the King of Destruction...and the King of Crime!