Along with their new rabbit-eared companion, Hajime and Yue are ready to challenge one of the world's most perilous dungeons: the labyrinth of Miledi Reisen. As one of the ancient Liberators, Miledi boasted tremendous power, and her sadistic, trap-riddled lair won't go down easy. Inside its confines, Hajime and company find themselves unable to use any of their magicbut he won't back down from the challenge. No matter what stands in his way, Hajime will fight his way back home to Earth!

Hajime's old classmates are in deep trouble, cornered by demons in the depths of the Great Orcus Labyrinth. Closest of these to Hajime was Kaori Shirasaki, who has long lamented her inability to save him from falling into the dungeon's abyss. When he arrives to rescue the class, she can finally see just how much he's changed--the commonplace otaku is now a ruthless, unstoppable killer! Can Kaori still reach the hardened heart of a man who's become the World's Strongest?

With all the trials of Miledi Reisen behind them, Hajime and company set out to conquer all the labyrinths of the ancient Liberators. Along the way, he runs into an unexpected reunionsomeone who recognizes Hajime from his old life back in Japan. But the new Hajime is a man on a mission, and not even the arrival of an ancient, deadly dragon can keep him from his goal!

Eri and Hiyama have betrayed the party, slaying Kaori in the process. Although the tide begins to turn against the foul traitors, what can be done about Kaori? Hajime tries to resurrect her with his newfound ancient magic, but...why is she refusing to return to her body? The determination of a fallen heroine brings forth a shocking new power in the aftermath of a tragedy!

To find his way back home to Earth, Hajime set out to conquer all the world's ancient labyrinths, and claim their magic for his own. After taking down the undersea ruins of Melusine, he and his party are enjoying some much-needed beach-side R&R. But that momentary peace isn't fated to last--he soon receives news that his old high school teacher, Aiko, has been kidnapped by Church zealots. Hajime and his party rush back to rescue her, but a fated encounter with the mad god Apostle looms ahe...

Reborn in the tempering fires of the Labyrinth, Hajime emerges from its depths with the secret knowledge of those who once defied the gods. Even if he was chosen as a hero, all Hajime really wants is to go back home to Earth. It won’t be an easy trip. Together with his lover and ally, the immortal Yue, he departs for the next step on his journey: the forest of the beastmen. Unfortunately, there are a few ride-alongs…not least among them a gorgeous, clumsy, and uniquely annoying rabbit-girl...

Betrayed and abandoned, Hajime has been reborn in the crucible of the Great Orcus Labyrinth. The once meek high-schooler has become a tough-as-nails avenger who will do whatever it takes to fight his way back home. To do that, he must first conquer the very bottom-most depths of the Labyrinth--and before him stands its prisoner, a beautiful young woman who claims royal, immortal blood. Does he dare trust anyone on his bloody road to salvation?

After a touching mother-daughter reunion in the city of Erisen, Hajime and his party resolve to take on the fourth Great Labyrinth, the underwater ruins of Melusine. Every labyrinth presents unique dangers, and this one summons up visions of the past to test those who dare to enter. Separated from the rest of their comrades, Kaori and Hajime will be challenged like never before. Will their relationship change in the fires of hardship?

After welcoming his old friend Kaori into their party, Hajime and company set off on a quest to conquer the Gruen Volcano. As one of the ancient labyrinths built by the Liberators in days of old, it contains rare magic that can't be found anywhere else...and the cure for the plague ravaging the nearby Duchy of Ankaji. Blazing-hot trials and unexpected adversaries await within, as Hajime's adventure starts heating up...literally!

Seventeen-year-old Hajime Nagumo is your average, everyday otaku. However, his simple life of pulling all-nighters and sleeping in school is suddenly turned upside down when he, along with the rest of his class, is summoned to a fantasy world! While the rest of his class are blessed with godlike powers and tasked with saving the human race from extinction, Hajime's job, a Synergist, only has a single transmutation skill. Will he be able to survive in this dangerous world of monsters and de...

At the Divine Mountain, Hajime fiercely battles the divine apostle Noint and all of her seemingly limitless magical power. When Hajime unleashes a powerful technique, the final showdown begins. Meanwhile, Hajime's classmates in the royal capital prepare to fight invading demons...only to be betrayed! An angelic battle rages while a hidden madman makes his move!

Using the ancient Spirit Magic obtained from the Divine Mountain, Hajime and company have saved transferred Kaori's soul into Noint's body, saving her life. Although the scars of battle remain, Hajime sets to depart from the Capital City. Familiar faces join them in their travels, and the party ventures to the verdant shadows of the Sea of Trees...and the Haltina Labyrinth that awaits within!