The Devil Is a Part-Timer!

Bayron City -- a Mega-Float type city in the Pacific Ocean, which doesn't belong to any particular nation. As the mine for Orgonium, a new energy resource, this city is the most noticed in the world right now, and here special cases caused by demons called "D Hazards" has been occurring frequently. Only a handful of people know about the existence of D Hazards. They are handled by PMCs (Private Military Companies). Shu is a young man living in Bayron City who runs such a company, but his company is tiny. On top of that, he cherry-picks his jobs, so he is always in a bind for money. His life, both publicly and privately, is being supported by the beautiful high school girl Kisara who attends a school in Bayron City.

On the brink between Heaven and Hell lies the town of Daten City, where sinister spirits known as "Ghosts" feast upon humanity.

Toujou Basara is a high school student whose father has suddenly just remarried. His father then departs overseas leaving Basara with two new beautiful step-sisters. Little does he know, his new sisters, Mio and Maria are actually the new Demon Lord and a succubus!? Almost trapped into a life of servitude, Basara forms a reverse contract by accident and ends up becoming Mio's master! Hijinks ensue as Basara finds himself in one ecchi situation after another. However, Mio's life is in danger as she is pursued by demons and heroes!

The story is set in a world embroiled by war between Humans and Demons. The Humans’ greatest hero invades the Demon Queen’s castle determined to vanquish her. However, instead of fighting back, the Queen proposes an alliance with the Hero. She explains how a sudden end to the war can bring further chaos to the world as the Humans once united to stand against their common enemies would eventually begin fighting among themselves, with similar issues already occurring at the Demon Realm. Convinced by her words, the Hero joins forces with the Queen and together they execute a plan to bring prosperity and a lasting peace to both Humans and Demons alike.

Asahi, a boy who loves video games is killed in a traffic accident and ends up in another world. He tries to enjoy the otherworldly adventuring life he's always dreamed of, but his stats are on the level of an NPC's. He is in big trouble and is being chased by a monster when he hears, "Fear not, little brother!" and the monster is killed in one hit by Asahi's older sister, Maya, who followed Asahi to this world. So Maya has acquired some seriously OP skills, but she takes her adoration of her younger brother to extremes. Thus begins their story about an overpowered older sister with a brother complex and a younger brother with the weakest of stats in another world.

Turns out, evil takes initiative! With world domination close at hand, the Kisaragi Corporation turns its sights on interstellar conquest, and who better to take over a magical world than two randomly assigned minions—Combatant Agent Six and his android partner Alice? But Six’s path up the evil corporate ladder won’t be easy—a Demon Lord’s army is hatching its own nefarious plan!

It has been 800 years since the incredibly fast and powerful gods of battle known as the Idaten had sealed away the demons after an intense battle. Now, that battle is just considered a myth or a fairytale. While the current generation of Idaten who have never even had to fight are enjoying their peaceful lives, someone awakened the demons once again! Armed forces, ingenuity, politics, and intrigue. If you've got it, use everything you can! This three-way battle royale with no rules and no limits is about to begin!!

Miaka, a junior high school student in Tokyo, has normal problems: fights with her mom, entrance exams, and deciding where she's going to go eat with her friends. But when she finds a mysterious book in the library, her life is changed forever when she and her best friend are transported inside!

After a traffic accident, Kazuma Sato’s disappointingly brief life was supposed to be over, but he wakes up to see a beautiful girl before him. She claims to be a goddess, Aqua, and asks if he would like to go to another world and bring only one thing with him. Kazuma decides to bring the goddess herself, and they are transported to a fantasy world filled with adventure, ruled by a demon king. Now Kazuma only wants to live in peace, but Aqua wants to solve many of this world’s problems, and the demon king will only turn a blind eye for so long…

Childhood friends Tachibana Hinata and Jinguji Tsukasa were living the everyday life of office workers. Then, on the way home from a mixer, they were sent flying into another world by a mysterious being. Once there, Jinguji sees his best friend has been turned into a beautiful blonde-haired, blue-eyed girl...?! The adorableness of Tachibana’s female form completely flummoxes Tachibana. But these two are each others’ best friends. To keep their relationship from being destroyed, they must defeat the Demon Lord as quickly as possible and return to their original forms.

There was once a man who was summoned to another world, and saved it. Of course, he became too popular there, and turned into an isekai-normie. However, that man fell into a "trap" and was forcibly returned to his original world. Moreover, he had to start over as a baby! This is the story of the way-too-fantastic ex-hero who lived as a gloomy high-schooler, as he gets summoned once again to that same other world in a very unexpected development!

After dying in the act of stopping a crime in modern Japan, our hero is reincarnated as Cain von Silford, third son of a noble family in a world of swords and sorcery. In his new life, all children receive a blessing from the gods...but Cain is unexpectedly blessed with an absolutely enormous, over-the-top cornucopia of magical powers. If his dream of traveling the world as a free spirit is to come true, he can't reveal too much of his potential to the wrong people. A light-hearted, escapist adventure in another world begins!

A middle-aged man with only one passion in his life meets a fitting end in a traffic accident. That's where most stories would end, but instead, this is when his story begins when he's reborn as what he admired the most in life--a vending machine! But his new lease on life happens in the worst place possible--what can a vending machine do in a monster-infested dungeon when he can't speak or even move on his own?

Rokuro is from a family of exorcists, but he'd rather be a singer, a soccer player or anything but an exorcist! He's forced to own up to his own incredible potential when new arrival Benio stirs his competitive spirit. But their rivalry gets a twist when they earn the prestigious title of "Twin Star Exorcists"—two supreme fighters fated to marry and birth the ultimate spiritual warrior!

Shadowbrokers are those who go unnoticed, posing as unremarkable people, when in truth, they control everything from behind the scenes. Sid wants to be someone just like that more than anything, and something as insignificant as boring reality isn’t going to get in his way! He trains in secret every single night, preparing for his eventual rise to power—only to be denied his destiny by a run-of-the-mill (yet deadly) traffic accident. But when he wakes up in a another world and suddenly finds himself at the head of an actual secret organization doing battle with evil in the shadows, he’ll finally get a chance to act out all of his delusional fantasies!

The prideful archangel Lucifer disobeys God and is cast into the lowest level of hell as a fallen angel. On her way to hell, Lucifer happens to meet a high school girl on Earth named Maria, who helps her. In hell, Lucifer meets Leviathan, and Leviathan explains to Lucifer about The Seven Deadly Sins, the seven demon king rulers of hell. After The Seven Deadly Sins seal Lucifer's powers, Lucifer goes on a journey with Maria and Leviathan to defeat them.

Kogarashi Fuyuzora is a "hands on" psychic. Ever since the day he got possessed by an evil ghost, he has been burdened with debt. Needing a cheap room to rent, he winds up at a haunted hot springs inn, Yuragi Inn, where only incredibly beautiful girls reside. Amongst the residents is a ghost, Yuuna, who cannot move on to the spirit world. Despite the resistance from the current tenants that are all girls, Kogarashi manages to start his new life at Yuragi Inn.

For 30 years, thousands have traveled to other worlds. The few that return keep the powers they had in those worlds. Akatsuki Ousawa returns from the world of Alayzard with the defeated Demon King's daughter, Miu. Miu pretends to be Akatsuki's sister to hide her true identity. They join Babel, a school for inter-dimensional travelers, and struggle against the student council to uncover the truth behind the school.