The Black Wolf versus the Wild Tiger!! The girl who suddenly appeared before Yuuto turns out to be none other than Sigrdrífa, the reigning divine empress of the land of Yggdrasil. Equally shocking for Yuuto is the fact that she bears an uncanny, twin-like resemblance to his childhood friend Mitsuki. As she is traveling incognito, Yuuto welcomes her to stay in the Wolf Clan palace for the time being, and he soon learns information from her that may hold the key to his returning home to the modern era. But just as Yuuto’s hopes are rising, the Lightning Clan attacks once again, led by the Battle-Hungry Tiger Steinþórr! Yuuto moves to intercept them with a new clever scheme, but...?!

Some urban legends are best left untested! Yuuto Suoh gets more than he bargained for when he joins his childhood friend Mitsuki Shimoya in testing out an urban legend. When he uses his phone to take a picture of himself with the local shrine's divine mirror, he is whisked off into another world -- one heavily steeped in the lore of the old Norse myths. Using his knowledge gained from school and from his solar-powered smartphone, he has the chance to bring the Wolf Clan, the same people who cared for him, to prominence, all while earning the adoration of a group of magic-wielding warrior maidens known as the Einherjar.

Some urban legends are best left untested! Yuuto Suoh gets more than he bargained for when he joins his childhood friend Mitsuki Shimoya in testing out an urban legend. When he uses his phone to take a picture of himself with the local shrine’s divine mirror, he is whisked off into another world – one heavily steeped in the lore of the old Norse myths. Using his knowledge gained from school and from his solar-powered smartphone, he has the chance to bring the Wolf Clan, the same people who cared for him, to prominence, all while earning the adoration of a group of magic-wielding warrior maidens known as the Einherjar.

Enough is enough! Yuuto knows drastic actions are necessary to save the Wolf Clan from destruction - but can he convert enough people to his side in time?

Hárbarth has finally been defeated—though at the cost of Rífa’s life. Yuuto, now faced with the imminent destruction of Yggdrasil, has no time to mourn and must move forward with his plans to save the continent’s people. As the new þjóðann, he has issued a decree mandating that all patriarchs fall under his banner. However, Oda Nobunaga, patriarch of the powerful Flame Clan, defiantly continues his march upon the Holy Capital... The epic battle between the two summoned patriarchs is about to begin! Can Yuuto’s cheat abilities defeat the legendary warlord of old? The final showdown between the two mighty leaders begins in this 15th volume!

With Yuuto back in Yggdrasil, now it’s his turn to retaliate! At last, our hero has returned to Yggdrasil. Having turned Steinþórr’s army away with his “Empty Fortress” strategy, Yuuto sets out to attack and drive off the invading Panther Clan immediately. “I can’t afford to dawdle at a time like this.” Back from Japan with new tools and tactics in hand, it’s time for Yuuto to raise the banner of counterattack, in this intense whirlwind of a ninth volume!!

At last, Yuuto returns to the modern world. What fate awaits the Wolf Clan without its leader?! Due to Sigyn’s spell, Yuuto suddenly finds himself returned to the modern world he came from. Though he is joyous to reunite with the woman he loves most, his childhood friend Mitsuki, he is also fraught with worry over the “family” he left behind in Yggdrasil. Meanwhile, the Wolf Clan army falls into turmoil with Yuuto’s disappearance. As their enemy the Panther Clan takes advantage of this to launch a great assault, Felicia and the others confront them desperately, resolved to do-or-die! The time has come for Yuuto to make his most important decision in this 7th volume!!

The great earthquake continues to wreak havoc upon the battlefields of Yggdrasil. Witnessing the collapse of the Gjallarbrú Fortress, Nobunaga wastes no time ordering a full assault, forcing the Steel Clan to fight a perilous retreating battle. Meanwhile, Sigrún, swept away by the surging waters of the Körmt River, finds herself forced into a deadly duel with Shiba, the mighty general who had defeated her just months earlier. Faced with their greatest threat to date, can Yuuto find a path to survival for the Steel Clan?!

Yuuto has forced the Flame Clan, led by the legendary Oda Nobunaga, to call off their assault of the Holy Capital and make their retreat, though not without him suffering a painful loss—the death of his trusted general and friend, Skáviðr. Driven by his burning desire to save the people of Yggdrasil from their impending doom, Yuuto moves his forces eastward. However, in the eastern lands of Jötunheimr lies the powerful Silk Clan, overseen by its beautiful but tyrannical leader, Empress Utgarda, who rules through a combination of fear and cunning. Yuuto enacts his will upon the entire continent of Yggdrasil in this 16th volume of the long-running hit fantasy series!

Yuuto and the Steel Clan have little time to celebrate their victory against the Silk Clan as the Flame Clan Army resumes its advance. Once again, Fort Gashina is the center of the conflict. The Horn Clan Army under Rasmus attempts to hold the fort in Yuuto’s absence. Can Yuuto, with his cheats, defeat the legendary Oda Nobunaga, one of history’s greatest strategists, once and for all? The long-awaited Battle of Yggdrasil begins in this 17th volume!