Loki Familia is in dire straits within the artificial Dungeon, Knossos. Separated and forced to face the Evils' cursed weapons, Aiz's wind guides them through the crisis. The wounded adventurers attempt to escape, but several of their number never make it back to the surface...

Intelligent monsters, the Evils, the Hestia Familia and Aiz's Loki Familia. Head of the latter, Finn alone is calm amid the chaos. In this clash of wills, what path will Finn take? Unwilling to abandon her anti-monster philosophy, Aiz moves to stop Bell, but she finds her path blocked... The battle with the mysterious gale swordsman begins!

As Lena suffers Valleta's wrath, Bete's scars begin to ache. In a fit of rage, he charges into enemy territory alone, invoking Hati, the powerful magic that forces him to relive his painful past. It burns all, leaving even his heart reduced to ash. With Bete's fury awakened, his enemies shall know no mercy...

A year and a half after the end of the Dollars, things are heating up in Ikebukuro again. Between the Headless Rider's return amid rumors of kidnappings, and the Raira freshman who can go toe-to-toe with Shizuo Heiwajima, it's never a dull moment in the city!

Having triumphed in the War Game, Lilly, Welf, and Mikoto have forged new bonds with each other and with Bell, and the new-and-improved Hestia Familia is feeling distinctly more familial. But when Bell has to venture into the pleasure quarter of Orario to come to Mikoto's aid, he's soon tangled up in more intrigue than he bargained for. Ishtar Familia owns the night here, and none of Bell's experience can prepare him for their courtesan wiles!

'Hestia, I challenge you to a War Game!' 'What's with you, Apollo?' A War Game--an all-out proxy war between gods, and the winner takes all. But what is it that Apollo wants? Hestia's beloved Bell Cranell, of course! With a week to go until the Game, things are bleak enough, but then Lilly is kidnapped by the Soma Familia. The outlook isn't good , but Bell has made many friends through his adventures, and they won't stand idly by. The familia myth continues!

A year and a half after the disbandment of the Dollars, the streets of Ikebukuro are plagued by a series of assaults. And the person behind the attacks is...a character from an anime set in Ikebukuro?! Meanwhile, Yahiro and company set out to stop the Ikebukuro crime spree at the behest of Walker and Erika. And as the incident escalates, the Headless Rider can't help but be reminded of the incident involving a certain slasher...

One letter from a city girl can cause untold chaos! Bell has been meeting up with Syr as promised, which of course turns into its own kind of commotion as the workers at the Mistress of Fertility, the Sword Princess, and even Freya Familia all get involved. While everyone is preoccupied with these hijinks, a new shadow approaches the city...

In the sequel series to the urban fantasy Durarara!!, Yahiro Mizuchi has come to Tokyo in the hopes of starting a new life (and maybe seeing the Headless Rider), but the famous Dullahan hasn't been seen in half a year-and neither has anyone who's gone to find her!

A year and a half after the fall of the Dollars, the trio from Raira Academy pay a visit to Anri and her new antique shop in Ikebukuro. Shortly after a certain someone pressures her to sell them Saika, her business is ransacked. But when Celty gets a tip about Anri and rushes over to her shop, she comes face to face with Akabayashi and others involved with the blade. What further secrets does this cursed weapon keep...?

Having uncovered Ali's true identity, Freya decides to take her along on her journey home. But as they visit Leodo’s bazaar to prepare and set off across the harsh, unforgiving desert, Ali is at the mercy of the freewheeling Freya. Could Ali truly be Freya's soulmate—the Odr she’s been searching for all this time?

Syr confessed her feelings to Bell at the Goddess Festival and received his answer. It wasn't the one she wanted but the Goddess of Beauty isn't about to let her mark escape so easily. Freya appears before Hestia with one request-hand over Bell.

Ikebukuro has a slashing problem.Ikebukuro, Tokyo. A place where the clumsy and inept at love gather. A high school girl worried about her status. A third-rate magazine reporter covering the Ikebukuro beat. A teacher suspected of sexual harassment. A thug wearing a yellow bandanna, who is said to be the toughest around. A young man who deals in all manner of sensitive information. And a headless rider on a coal-black motorcycle. As these individuals and more are drawn into a whirl of unlucky incidents, Ikebukuro itself will begin to crumble...!

Aiz and Bell's secret training pays off...!! As Loki Familia finishes preparations for their expedition to the 59th Floor, they're not the only group headed back to the Dungeon. But it's like Dejavu when Aiz hears of a white-haired adventurer and a Minotaur, and she bolts away from her Familia to check on Bell!

Aiz Wallenstein, the Sword Princess, is known as one of the most powerful warriors from one of the most powerful groups in the city of Orario: Loki Familia. With them, she ventures into the deepest parts of the labyrinthine Dungeon beneath the city, stalking the monstrous denizens that lurk there and vanquishing them with the blazing light of her sword. But when she meets a certain white-haired boy, the encounter will change both of them forever...

As a cost for saving the young dragon girl Wiene, Bell's name has become synonymous with "greedy", "despicable", and "traitor." He and his familia have completely lost the trust and respect of everyone residing in Orario. There's no time for him to feel sorry himself when his newfound monstrous friends, the Xenos, need his help to get home. But when the greatest obstacle in their way is Loki Familia, does Bell have what it takes to raise a fist against his beloved idol, the Sword Princess Aiz Wallenstein?

After being rescued from some of Ishtar Familia's fiercest female warriors in the Red Light District, Bell can't help letting his thoughts drift to Haruhime, the woman who helped him escape. He wants nothing more than to return the favor and save her from her painful life of servitude, but after seeing Ishtar Familia's strength firsthand, he'll need to put his plan into motion quickly...

Monsters. Fundamentally different from humans and beasts, these loathsome creatures make their homes underground. To Aiz, such beings exist only to be destroyed, so when they suddenly appear in Orario, she doesn't hesitate to leap into action. As chaos erupts in the streets, Loki Familia rises to quell the onslaught, only to find Bell Cranell standing in their way. Bell seeks to protect the rampaging monster behind him, but in order to do so, he'll have to go up against Aiz herself...

A monster has spawned on the (supposedly) safe Eighteenth-floor! A Black Goliath falls upon the Under Resort and it's unprepared inhabitants. Has it awoken because gods have dared trespassed in the Dungeon? Bell, Hestia, and their mismatched team of gods and adventurers prepare to fight this unexpected floor boss...!

Stuck on the 27th floor with no way out, Lilly and the rest of the party are forced to endure an 'adventure' that has been thrust upon them in the sudden absence of their leader! Meanwhile, Bell and Lyu have found themselves on the 37th floor after becoming separated from the others. Alone, without support, and unsure of what to do, will they be able to make it out alive of the deepest floor Bell has ever set foot in?

And so the boy begins to run again. Bell has grown through combat with his greatest rival. A rank up, a denatus, a new nickname...as he draws attention from the people and deities of Orario, the young adventurer receives a letter. "A mission...an expedition?" Bell has reached a higher level, and he must therefore take on an even more challenging adventure. The order from the Guild leads him toward a new stage. And so, a faction alliance sets out for the Dungeon. Alongside his companions, Bell faces new floors, new monsters, and new unknowns.

Overcoming the countless dangers and perils of the Dungeon, Bell and his friends have finally made it back to the surface. After all they've achieved, there's no doubt that all of them have grown stronger and wiser. With the clamor of battle behind them, everyone finds the chance to think back to where it all started as a brief peace visits the land where heroes are born...

MORE LEVELS, MORE PROBLEMS!Following his defeat of the Minotaur, Bell has reached Level Two--and is the new record holder for the fastest to do so. Suddenly everyone in Orario wants to form a party with him and go adventuring! But with sudden popularity comes many a complication. How will Bell and Hestia know whom to trust? The Familia myth--written by the goddess and lived by the boy--continues!

Bell, along with his adventuring party of Welf the swordsmith and Lilly the supporter, has made it into the middle floors of the Dungeon, but the schemes of another party have stranded them there! Hestia's going to need to send help, but will the rescuers arrive in time to save Bell and his friends from the monster that's got them cornered? The familia myth of the boy and the goddess continues!

In the new dungeon, The Great Forest Labyrinth, a dragon girl named Wiene has appeared and Bell meets her! Seeing that she is neither human nor monster but something entirely different, Bell promises to protect her but...A band of violently immoral hunters slowly worm their evil influence into the Dungeon and begin to wreck havoc, irreversibly causing strife between people and monsters. Amidst all this, the Guild begins to move and the true master appears. All these events revolve around the vivre girl Wiene and cause waves in the city above as well!The irregulars will shake humans, monsters, and even the gods to their core. The young hero walks his path and the goddess records it--the Familia Myth!