One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss. This is Yuki’s story, my story. It tells the tale of how I spent my days after settling down in a dungeon with a self indulgent, “supreme” dragon girl and a young vampire.

“….Krische-sama, are you not afraid of killing people?” “……? No. After all, it doesn’t hurt Krische.” Although gifted with the talent to do anything with ease, the girl lacked empathy. In her world, there is only loss and profit. No goodwill, no love. Inhumanly recognizing cold, mathematical logic as everything, she looks at everything in the world through calculating lens. Return given profit with profit, loss with loss. The girl was undoubtedly pure, yet undeniably abnormal— Her favorite things are cooking, food, and being pampered. Her specialty is murder. —- This is the story of a slightly unhinged girl being surrounded by kind and loving people, and her journey to find happiness.

A Count’s Daughter who lost in the running to become the Second Prince’s fianceé, Camilla. The Prince chose a Baron’s daughter as his fianceé, and the world blessed the two’s love as fated. On the other hand, Camilla who was tailored and elevated as the love’s villain in the end, as punishment she was made to marry a terribly fat and ugly man――called『Toad of the Swamp』from his appearance, a lord of a remote region named Alois. As an ugly toad-man’s plaything, the noble villainess girl walks along the road of her wretched last days――as if I’ll let that happen!　I won’t just get married meekly like this. I’ll definitely make him diet and polish him into a good man and show them good――! A romance story between a girl who isn’t discouraged and an intellectual man who’s different from his appearance, a diet and their meals, coaxing the other yet sometimes being played themselves.

Seventeen-year-old Hajime Nagumo is your average, everyday otaku. However, his simple life of pulling all-nighters and sleeping in school is suddenly turned upside down when he, along with the rest of his class, is summoned to a fantasy world! They’re treated like heroes and tasked with the duty of saving the human race from utter extinction. But what should have been any otaku’s wet dream quickly turns into Hajime’s nightmare? While the rest of his class are blessed with godlike powers, Hajime’s job, Synergist, only has a single transmutation skill. Ridiculed and bullied by his classmates for being weak, he soon finds himself in despair. Will he be able to survive in this dangerous world of monsters and demons with only a glorified blacksmith’s level of strength?

In these troubling times, Luke, the son and heir of the lord of the land, turned twelve and received a Gift. Unfortunately, it was a Gift useless in combat called [Village Building]. To make matters worse, his step-brother was the one blessed to inherit their father’s [Master Swordsmanship]. And so, their positions were completely reversed. Luke was then banished to an uninhabited wasteland. There, his mysterious Gift activated and instantly made a village. He thus prepared himself to live modestly in this tiny village of his. Or so he thought. As the population of his village grew and grew, his Gift got stronger and stronger until it evolved. Before he knew it, his [village] had tall buildings everywhere and had the strongest army. His village became the best there was…! “Wait, can this still be called a village? And what happened to the slow life I’m supposed to have…?”

Nagi who was summoned to another world acquired the「Skill Structure」skill. Nagi felt the hints of black job from the king’s request 「To defeat the devil king」. He leaves the castle and starts his journey with a s*ave girl. The small demon girl Cecyl, the melee-fighter beast girl Rita , Aine the onee-chan maid, Regii the cursed sword. Rafiria the warm and fluffy elf and Iris the sea dragon shrine maiden. Nagi rewrites the girls’ skills and made them into 「cheat characters」one after another.

It is the day of her long-awaited debutante at the age of 15. Marshallie Gracis, a Viscount’s daughter, witnesses her own fiancé kneeling before another woman and begging for her love. She was saddened by the unexpected scene of the affair, but her fiancé offered no excuse or apology. She thought the engagement would be broken off, but it wasn’t even that, and the next thing she knew, 10 years had passed without her being married… 25-year-old Marsha had given up on the idea of getting married to become the queen’s maid of honor.

The people who stayed at school after class are summoned to another world. They were asked to defeat the demon king at the royal palace. The People, who were summoned, were to receive one blessing per person, but the protagonist and another girl did not. The eyes from people around them become cold and the two of them were driven out by the soldiers and decided to leave the capital and travel. They were rewarded with skills and status more than what the soldiers snatched away.

The protagonist is reborn in the world of the game he loved so much – [Dungeon Brave Souls]. However, he was reborn not as a hero who adventures with the heroine while flirting with her, but as a villain who steals the heroine and drives the world to extinction. Why in the world should he be reborn as a villain who ruined his favorite game? The protagonist is in despair, but he still decides to live his second life freely, using his knowledge of the game. However, the reality is not as good as he expected. Events that should not have happened in the game, scenario changes happen one after another…! The villainous character crushes both the demon king and the heroes. A heroic tale of evil supremacy!

“Compared to our time, the current generation just aren’t as reliable” they said, “Still, isn’t he the son of the Hero?” How annoying. It’s been over ten years since the battle between mankind and the demons ended. The children of the heroes who saved the world are all grown up. One of them, Earth, was a talented man, and everyone expected him to succeed his father as a warrior and defend his country, but Earth was always wary of his father’s title. One day, Earth is shocked to find his father’s sword, which was used to overthrow the Demon King, sealed in his family’s mansion. Because trapped within was the ghost of the Great Demon King who was unable to pass on and continued to roam the world. For some reason, only he could see the spirit of the Demon King, and the Demon King possessed him through the sword. Every day, forced to coexist with the spirit of the Demon King, they live a strange shared life, when the Demon King whispers to Earth on a whim. “I have a grudge against your father. If you want to get back at your father and the world, I’ll train you. I’m free.” Earth receives special personal guidance from the Demon King just to get back at his parents and the world. Then, in the coming days. The hero’s parents, the heroes of the past, the first love, the princess childhood friend, the geniuses of the era, and the world will tremble.