Rui Tsukiyo

• Jan-2020
• / Fantasy
• 

CAN HUMANS AND MONSTERS LIVE TOGETHER IN PEACE?

In a world where demon lords build dungeons and devour human emotions, one rookie demon lord, Procel, has a new idea. Procel seeks to build a revolutionary new dungeon where humans and monster...

• Jun-2020
• / Fantasy
• 

A demon lord decides to break from the evil mold when building his dungeon--and develops a pleasant city instead!

In a world where demon lords build dungeons and devour human emotions, one rookie demon lord, Procel, has a new idea. Procel se...

• Dec-2020
• / Fantasy
• 

TROUBLE IN PARADISE

Construction on Procel''s utopia is finally underway. But nothing seems to be going right for the young demon lord. Between negotiating with shrewd merchants, bestowing names on contracted monsters, and facing off against...

• Jan-2021
• / Fantasy
• 

The most dangerous prey… When the most accomplished assassin on Earth meets his end just before retirement, he finds himself standing before a goddess. Her world is headed for disaster, and she has need of his particular set of skills. Armed with ...

• Feb-2021
• / Fantasy
• 

The most dangerous prey…When the most accomplished assassin on Earth meets his end just before retirement, he finds himself standing before a goddess. Her world is headed for disaster, and she has need of his particular set of skills. Armed with po...

• May-2021
• / Fantasy
• 

DIVIDE AND CONQUER? The war rages on! Outnumbered, Procel splits his main force and goes on the offensive...but will it be enough? A nightmarishly powerful monster awaits Quina and Rorono in the dungeon of the Demon Lord of Mucus. Meanwhile, a certa...

• May-2021
• / Fantasy
• 

The Assassin Meets the Hero Lugh, Dia, and Tarte enroll in the most elite academy in the Alvanian Kingdom. On the surface, the group is there to learn how to be knights, but Lugh’s real goal is to get close to the hero he’s been tasked with elimi...

• Dec-2021
• / Fantasy
• 

THE COST OF WAR AND GREEDProcel’s dungeon utopia is threatened by the greed of their neighbors, but it’s up to Wight to defend them. Whether he’s up against a human or a demon lord, he must use all of his tactical skills to defend t...

• Mar-2022
• / Fantasy
• 

The great assassin’s next target is…the cosmetics industry! After completing his assassination training, Lugh embarks on his last test as heir to the Tuatha Dé clan: taking on the business world. Now, he dons the identity of Illig Balor and for...

• Mar-2022
• / Fantasy
• 

Testing into Class S has given Lugh the perfect opportunity to get closer to his target, the hero Epona -- assuming he can survive being the hero’s personal punching bag! It will take all of Lugh’s skills to look past his quarry’s monstrous str...

• Jun-2022
• / Fantasy
• 

Face-to-face with his target at last… Lugh took his latest mission with confidence, but when he barely manages to stop the assault on Count Viekone’s castle, he realizes something. As they are, his skills aren’t going to cut it agai...

• Jun-2022
• / Fantasy
• 

A wicked plot in the heart of the kingdom! Three demons have fallen, and Lugh wastes no time preparing new tools to handle the next one. Unfortunately, he’s interrupted by a conspiracy in the royal capital. It seems someone wants to frame him for m...

• Jul-2022
• / Fantasy
• 

Face-to-face with his target at last… Lugh took his latest mission with confidence, but when he barely manages to stop the assault on Count Viekone’s castle, he realizes something. As they are, his skills aren’t going to cut it against the her...

• Jul-2022
• / Fantasy
• 

Face-to-face with his target at last… Lugh took his latest mission with confidence, but when he barely manages to stop the assault on Count Viekone’s castle, he realizes something. As they are, his skills aren’t going to cut it against the hero...

• Nov-2022
• / Fantasy
• 

After Lugh’s most recent victory in his battle against the demons, he decides it’s time to take his relationships with Dia, Tarte, and Maha to the next level, proposing to all of them. The celebration is brief, however, for the Royal Knights Acad...

• Dec-2022
• / Fantasy
• 

A DUNGEON PLOTS AND PLUNDERS!After obtaining a forbidden power, Procel learns of a senior demon lord’s plot against him. Unwilling to let another lord belittle his townspeople or force them to submit to outside rule, Procel plans a counterstrik...

• Feb-2023
• / Fantasy
• 

Lugh vs. Epona! The power of the hero is finally revealed!  Having aced the Royal Knights Academy exams, Lugh is now the classmate of his assassination target, the hero, Epona. But he’s only given a brief moment of peace before being thrown in...

• Apr-2023
• / Fantasy
• 

A NEW FUTURE TO SAVE AN OLD LOVE.Procel has charged full-speed into his plan to save Marco, not only from the attack on her dungeon, but from her own fate. The Demon Lord of Creation is prepared to make sacrifices, big and small, even if it means he ...

• May-2023
• / Fantasy
• 

An army of orcs is invading, and although the academy is doing its best to fight back, its walls are crumbling. While Dia and the others battle the main force, Lugh chases after the Hero, Epona. Can the two of them take down the demon that’s leadin...

• Jun-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Jun-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Jun-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Jun-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Jun-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Jun-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Jun-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Jun-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Jun-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Jun-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Jul-2023
• / Fantasy
• 

To Kill A Comrade!Naoise has turned his back on humanity and become a servant to Mina, the snake demon. Lugh thought he could find a way to stop his way ward friend without killing him, but things come to a head when Naoise turns his sword against hi...

• Aug-2023
• / Fantasy
• 

Action and drama intertwine in this captivating manga about a boy burdened with an impossible task—using the power of modern-day knowledge and alchemy to lift an entire nation out of poverty!Reborn as the third prince of a tiny and insignifican...

• Dec-2023
• / Fantasy
• 

UNWAVERING DETERMINATION CHANGES THE COURSE OF WAR!A mastermind’s shadow looms overhead, and Procel intends to thwart any malicious plans! After saving Marco from near death, Procel swears to always be with her. As he enjoys a peaceful life for...

• Jun-2024
• / Fantasy
• 

A CITY FILLED WITH SMILES IS THE GREATEST WEAPON!When Balam, the Demon Lord of Darkness, reveals he had been pulling strings in Stolas’s war and requests a collaboration, Procel launches on a mission to rid himself of the troubling Demon Lord. ...

• Sep-2024
• / Fantasy
• 

Is this the power of the hero?! Lugh challenges the orc general leading the monster horde, but no matter how he kills the demon, a mysterious force negates the damage. When Lugh tags in Epona, she unleashes the full fury of her overwhelming S-rank sk...

• Jan-2025
• / Graphic Novel
• 

“TAKE MY POWER!”The dreaded white plague has reached Avalon, but Procel and his followers are able to eradicate even it, forcing the Demon Lord of Darkness to launch his next attack...beginning with the kidnapping of Rorono, the pillar of...

• Feb-2025
• / Fantasy
• 

Thanks to his valiant efforts in defeating the orc general, Lugh is appointed as a Holy Knight. However, no glory comes without strings attached, as he is now tasked to subjugate the demons only the hero can kill. And to do so, Lugh must ensure his a...

• Jun-2025
• / Graphic Novel
• 

A demon lord decides to break from the evil mold when building his dungeon–and develops a pleasant city instead!In a world where demon lords build dungeons and devour human emotions, one rookie demon lord, Procel, has a new idea. Procel seeks t...