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He Who Fights with Monsters
1 web novel and 12 books

A series by Shirtaloon, and Travis Deverell
He Who Fights With Monsters
Royal RoadStub
Series: He Who Fights with Monsters
Authors: Shirtaloon (12 books), and Travis Deverell (8 books)
Series status: Ongoing
First published: July 28, 2019
Description: Jason wakes up in a mysterious world of magic and monsters. He’ll face off against cannibals, cultists, wizards, monsters, and that’s just the first day. He’s going to need courage, he’s going to need wit and he’s going to need some magic powers of his own. But first, he’s going to need pants.
Follow Jason as he makes a place for himself in a world that is strange, yet sometimes strangely familiar. He’ll meet crime lords and aristocrats, gods and monsters on his path from would-be victim to heroic adventurer. At least, he tries to be heroic. It’s hard to be good when all your powers are evil.
He Who Fights with Monsters
Published Novel
Series: He Who Fights with Monsters (book 1 out of 12)
Authors: Shirtaloon (12 books), and Travis Deverell (8 books)
Series status: Ongoing
First published: February 23, 2021
Description: Jason wakes up in a mysterious world of magic and monsters.

It’s not easy making the career jump from office-supplies-store middle manager to heroic interdimensional adventurer. At least, Jason tries to be heroic, but it's hard to be good when all your powers are evil.

He’ll face off against cannibals, cultists, wizards, monsters...and that’s just on the first day. He’s going to need courage, he’s going to need wit, and he’s going to need some magic powers of his own. But first, he’s going to need pants.

After cementing itself as one of the best-rated serial novels on Royal Road with an astonishing 13 million views, He Who Fights with Monsters is now available on Kindle.

About the series: Experience an isekai culture clash as a laid-back Australian finds himself in a very serious world. See him gain suspiciously evil powers through a unique progression system combining cultivation and traditional LitRPG elements. Enjoy a weak-to-strong story with a main character who earns his power without overshadowing everyone around him, with plenty of loot, adventurers, gods and magic. Rich characters and world-building offer humor, political intrigue and slice-of-life elements alongside lots of monster fighting and adventure.
He Who Fights with Monsters 2
Published Novel
Series: He Who Fights with Monsters (book 2 out of 12)
Author: Shirtaloon (12 books)
Series status: Ongoing
First published: May 10, 2021
Description: The path from retail middle management to interdimensional wizard adventurer wasn’t easy, but Jason Asano is settling into his new life.

Now, a contest draws young elites to the city of Greenstone, competing for a grand prize. Jason must gather a band of companions if he is to stand a chance against the best the world has to offer.

While the young adventurers are caught up in competition, the city leaders deal with revelations of betrayal as a vast and terrible enemy is revealed. Although Jason seems uninvolved, he has unknowingly crossed the enemy’s path before. Friends and foes made along the way will lead him to cross it again as inevitable conflict looms.
He Who Fights with Monsters 3
Published Novel
Series: He Who Fights with Monsters (book 3 out of 12)
Author: Shirtaloon (12 books)
Series status: Ongoing
First published: September 5, 2021
Description: For all that Jason’s new life is amazing, he is about to learn that his new power, wealth, and influence comes at a price...

Riding high on success, he and his team are looking to the future, preparing themselves for the challenges to come. Nothing, however, could prepare him for the lessons his enemies have to teach. When magic is involved, the stakes can be even greater than life and death.

While Jason’s personal enemies make plans, the greater foes plaguing his new home have been pushed to the brink. With one powerful card left to play, they are on a collision course with Jason and his team. With no one to help and more than their lives on the line, Jason and his companions must fight with more monsters than ever in the race to grow stronger. With an invincible enemy already anticipating them, they will learn that sometimes winning the battle is more important than surviving it.
He Who Fights with Monsters 4
Published Novel
Series: He Who Fights with Monsters (book 4 out of 12)
Author: Shirtaloon (12 books)
Series status: Ongoing
First published: December 20, 2021
Description: An old friend brings comfort while an old acquaintance brings trouble as Jason and Farrah get the change of scenery they've been longing for.

The kingdom is in peril, which seems like small beans compared to saving the world a few times. It isn't even Jason's job to deal with as, for once, the powerful people around him are living up to their responsibilities.

This leaves Jason and Farrah time to recover, but healing isn't always easy. Their experiences on Earth still linger, and in a world of magic, the scars to the soul are the ones that stick.
He Who Fights with Monsters 5
Published Novel
Series: He Who Fights with Monsters (book 5 out of 12)
Authors: Shirtaloon (12 books), and Travis Deverell (8 books)
Series status: Ongoing
First published: March 28, 2022
Description: Jason has discovered that his homeworld is not what he thought. What’s more, the rest of the planet is on the precipice of sharing his revelation.

With magic on the rise and forces pulling him in multiple directions, Jason is faced with challenges greater than ever before.

Even as his power reaches new and incredible heights, he is faced with the realization that going beyond his best is still not enough.

Book 5 in the bestselling He Who Fights With Monsters Series is here. Grab your copy today!

About the series: Experience an isekai culture clash as a laid-back Australian finds himself in a very serious world. See him gain suspiciously evil powers through a unique progression system combining cultivation and traditional LitRPG elements. Enjoy a weak-to-strong story with a main character who earns his power without overshadowing everyone around him, with plenty of loot, adventurers, gods and magic. Rich characters and world-building offer humor, political intrigue and slice-of-life elements alongside lots of monster fighting and adventure.
He Who Fights with Monsters 6
Published Novel
Series: He Who Fights with Monsters (book 6 out of 12)
Authors: Shirtaloon (12 books), and Travis Deverell (8 books)
Series status: Ongoing
First published: June 28, 2022
Description: The world teeters on the brink of destruction.

The people who should be saving the Earth ignore Jason Asano's warnings and choose to loot the house as it burns down around them. He lacks the strength to save the world himself, but resolves to do it anyway, impossible be damned.

The impossible, in this case, means seizing a power that no mortal should touch. It's a choice from which there is no turning back, and marks Jason's first step into a wider cosmos that he is not yet ready to face.

Holding the fate of two worlds in his hands, Jason must decide for himself what home truly means.
He Who Fights With Monsters 7
Published Novel
Series: He Who Fights with Monsters (book 7 out of 12)
Authors: Shirtaloon (12 books), and Travis Deverell (8 books)
Series status: Ongoing
First published: September 10, 2022
Description: Jason arrives at a kingdom in peril and he's surprised to discover that it's not his job to save it.

With the authorities fulfilling their responsibilities (for once), he looks forward to some quiet time to rest and recuperate.

The locals might not find ceaseless monster onslaughts and an inter-dimensional invasion relaxing, but Jason has had a rough few years. He's doing his best to let go of his anger.

While his team is caught up in duty, Jason has no shortage of people looking to interfere with his rest. Enemies–old and new–are circling, and even would-be allies are trouble. A princess finds him inconveniently alive, an ancient king arrives at his barbecue, and the local Church of Fertility are uncomfortably enthusiastic about including him in their practices. As his friends strive to reach him from the far side of the world, they are all frustrated by obstacles.

Jason is finally back in the world he longed for, but he is not the same man he was when he left. As the pressure on him mounts, allies and enemies alike will find that out the hard way.
He Who Fights With Monsters 8
Published Novel
Series: He Who Fights with Monsters (book 8 out of 12)
Authors: Shirtaloon (12 books), and Travis Deverell (8 books)
Series status: Ongoing
First published: December 9, 2022
Description: After a much longed-for reunion, Jason Asano works on moving past old traumas as he looks to a brighter future.

Despite warnings of dangers awaiting him in the future, he gets back in the saddle as an adventurer, ready to tackle new challenges. Those challenges are not hard to find as enemies that have lurked in the background start moving into the light.

Jason and his friends don’t wait passively and use schemes of their own to take the fight to the enemy. Jason’s companions find themselves plunged into dangerous missions and confronted with enemies both personal and unexpected. Jason will push new boundaries, and while it comes at a cost, it will move him deeper into the realms of cosmic power.
He Who Fights with Monsters 9
Published Novel
Series: He Who Fights with Monsters (book 9 out of 12)
Authors: Shirtaloon (12 books), and Travis Deverell (8 books)
Series status: Ongoing
First published: April 11, 2023
Description: With the Builder threat behind them, the time has finally come for Jason and his team to hit the road.

Eager to get back to the adventuring he’s been longing for, Jason is excited to not be at the center of world-changing events. But before he goes, one last attempt to pull him into politics has him leaving Rimaros with a strong final impression.

With new places to visit and new people to meet, the remnants of recent events have scarred the land and left lingering dangers behind. It's a busy time for adventurers willing and able to fight with monsters. Threats that once loomed in the background start coming to the fore, and the team prepares to join the fight. Their angelic new adversaries are patient, powerful, and remorseless, using such unconscionable strategies that mass slaughter is only the beginning.

Jason is forced to confront that his growing power may give him more in common with his foes than his friends. While this opens a path to uncovering the methods and objectives of their enemies, it also brings him to their attention. To them, this makes him yet another tool to be used. But when conflict spills into epic battle, they'll be the latest to discover that challenging Jason Asano is a very bad idea.
He Who Fights with Monsters 10
Published Novel
Series: He Who Fights with Monsters (book 10 out of 12)
Author: Shirtaloon (12 books)
Series status: Ongoing
First published: November 28, 2023
Description: A subterranean power creates strange bedfellows for Jason and his friends in the epic next installment of He Who Fights with Monsters.

Following the devastating attack on Yaresh, its people are left to pick up the pieces. The city lies in ruins, but its decimated defenders have more to deal with than just reconstruction. Jason's actions during the battle have brought unwelcome attention from allies and enemies alike. While the adventurers question his loyalty, the messengers question his very nature. Both have designs on Jason that he intends to thwart, but a danger comes to light that shifts everyone's agenda.

Deep underground, a hidden civilization has survived by tapping into a long-buried power. That power's growing instability has become both a threat and an opportunity to the warring surface factions. Neither side can stop or claim the power alone, leading to an uneasy alliance with a reluctant Jason at the center. The adventurers, messengers, and Jason himself all have intentions for the power but little idea what awaits them below ground. There are more players involved than any of them realize, and soon, they will have greater problems than each other.

About the series: Experience an isekai culture clash as a laid-back Australian finds himself in a very serious world. See him gain suspiciously evil powers through a unique progression system combining cultivation and traditional LitRPG elements. Enjoy a weak-to-strong story with a main character who earns his power without overshadowing everyone around him, with plenty of loot, adventurers, gods and magic. Rich characters and world-building offer humor, political intrigue and slice-of-life elements alongside lots of monster fighting and adventure.
He Who Fights with Monsters 11
Published Novel
Series: He Who Fights with Monsters (book 11 out of 12)
Authors: Shirtaloon (12 books), and Travis Deverell (8 books)
Series status: Ongoing
First published: July 23, 2024
Description: Book 11 in the bestselling He Who Fights With Monsters Series is here. Grab your copy today!

About the Experience an isekai culture clash as a laid-back Australian finds himself in a very serious world. See him gain suspiciously evil powers through a unique progression system combining cultivation and traditional LitRPG elements. Enjoy a weak-to-strong story with a main character who earns his power without overshadowing everyone around him, with plenty of loot, adventurers, gods and magic. Rich characters and world-building offer humor, political intrigue and slice-of-life elements alongside lots of monster fighting and adventure.
He Who Fights with Monsters 12
Published Novel
Series: He Who Fights with Monsters (book 12 out of 12)
Authors: Shirtaloon (12 books), and Travis Deverell (8 books)
Series status: Ongoing
First published: May 19, 2025
Description: Twenty years ago, Jason was pulled into a world of magic and monsters.

He was promised a life of wandering his new home and having adventures, but things got out of hand pretty quickly. He met with kings and gods, fought interdimensional cults, and got in a knife fight with the guy who creates universes. He didn't win. What he'd never done was roam around, having nice, sensible adventures. He hadn't even seen the hometown of his friends, and that had been the first destination on his list.

Two decades on, he'd saved whole civilizations and the Earth, several times. He was freshly returned from a conflict with the fate of the cosmos at stake, where the battlefield was his soul and the combatants were the governing forces of reality. It was a fight he had no chance of winning, which was why he rigged it and pinched the prize while everyone was distracted.

Now, Jason is determined to reunite with his friends and have the simple adventuring life he always wanted. He won't let anyone get in his way, not angelic armies, scheming guilds, or the people who want to talk about that time he altered the fundamental laws of magic. Which isn't as bad as it sounds, he promises.

Jason's taking a gap year, whatever he has to do to make it happen. Manipulate a prestigious noble house into liberating a slave town. Attempt to extort every government on the planet. Blow up and subsequently rebuild the occasional city. Gods help anyone who tries to stop him, but the gods probably won't because they've met Jason and they know how that usually goes.