After their entire class was transported to another world, Yogiri Takatou and Tomochika Dannoura were abandoned when it was discovered they had failed to receive the Gift, a special power that the rest of their class inherited from a powerful Sage named Sion. What none of the others knew, however, was that Yogiri already had his own unique power — one that multiple world governments back home were keeping him under observation for: the power of Instant Death! With Yogiri’s abilities now exposed and being scrutinized by Sages and Swordmasters alike, this unlikely duo continues their adventure, determined to find a way back to Japan. The only lead they have to go on is to follow their former classmates’ trail and track down the formidable Sion in the hopes that she’ll be willing to negotiate. But even with the power of Instant Death on their side, the world around them seems intent on making the task as much of a hassle as possible!

With the majority of their class and the entire capital wiped out, Yogiri and Tomochika left behind the Kingdom of Manii in search of additional Philosopher’s Stones, the energy sources they were told to gather if they ever want to make it back home. Having received one stone from the Sage Sion, a second from Risley, and having taken a third from the self-styled War God Raiza, the pair next set their eyes on a new country in the east, following a lead on the potential location of another Sage. With the half-demons they were assisting now comfortably settled in the City of the War God, the two have left their previous companions behind to begin their journey home. But of course, nothing is ever simple. One after another, strange new people begin appearing in their path to block their progress, and some of their former companions may not yet be willing to let them go...

Awaking to absolute chaos and carnage while on a school trip, Yogiri Takatou discovers that everyone in his class has been transported to another world! He had somehow managed to sleep through the entire ordeal himself, missing out on the Gift — powers bestowed upon the others by a mysterious Sage who appeared to transport them. Even worse, he and another classmate were ruthlessly abandoned by their friends, left as bait to distract a nearby dragon. Although not terribly bothered by the thought of dying, he reluctantly decides to protect his lone companion. After all, a lowly Level 1000 monster doesn't stand a chance against his secret power to invoke Instant Death with a single thought! If he can stay awake long enough to bother using it, that is...

After being summoned to another world, Yogiri and Tomochika were abandoned by their classmates as bait to distract a rampaging dragon. Thanks to Yogiri’s ability to cause instant death with a single thought, the two of them survived and made the arduous journey to reunite with their classmates in the capital city. Although they overcame tremendous danger along the way, rejoining the other students is still only the beginning. From the intricate schemes of the Sages Yogiri inadvertently made into his enemies, to being stalked by Ayaka Shinozaki, a synthetic classmate who acquired the power of a dragon and swore to take revenge on them all, to the machinations of Lute, the spawn of a monster Yogiri slew, who is now bent on releasing yet another Dark God imprisoned beneath the city, there is no shortage of people determined to kill them. Somehow, the unlikely duo must juggle these threats while attempting to draw out the Sage Sion in hopes of discovering how to make it back home.

With the vast majority of Luu’s powers restored and the UEG dead, Yogiri and Tomochika are on the verge of finally making it back home. However, in order to undo the damage wrought by the UEG’s rampage, the Great Sage resets the entire world to the moment Yogiri’s class was first summoned. While the people Yogiri killed remain dead, everyone else is brought back to life, including Sion, the Sage responsible for summoning his class in the first place. Having retained her memories of her previous encounter with Yogiri, she agrees to help him and Tomochika collect the Philosopher’s Stones once again. While things seem poised to go more smoothly this time with her assistance, it doesn’t take long for another Sage’s carelessness to throw the entire world into a brand new kind of chaos.

Though Yogiri and Tomochika successfully managed to make their way to the mysterious continent of Belm, their success has come with a few drawbacks. As their companions are scattered across the continent, the duo (and their ghostly advisor, Mokomoko) soon find themselves caught up in the extensive warfare between Belm’s four factions. Yogiri’s abilities mean that they are safe from direct harm, but the bizarre system of laws governing the continent have left them in a position where even traveling around seems all but impossible. Somehow, they must find a way to reunite with their lost companions, find the Sage governing Belm, and retrieve his Philosopher’s Stone, all while dealing with the escalating response from the natives to Yogiri’s defensive powers. And wait—how did they get onto this island floating in the sky anyway?

With their intense encounter with Yoshifumi behind them and yet another Philosopher’s Stone in hand, Yogiri and Tomochika begin making plans to leave the island of Ent in search of more Sages. However, with the acquisition of another Philosopher’s Stone, the infant they were carrying with them has now grown into a three-year-old. On top of reuniting with Vivian, Hanakawa, and many other friends they had thought long gone, there seems to be no shortage of interruptions to stop them from accomplishing their goal. And just in case that wasn’t enough, they discover they are now wanted—dead or alive—across the entire world, making their casual journey an even more challenging affair.