Dungeons have appeared in the modern world, where skilled players compete against each other. There, there is a young man named Kanzaki Yukari who dreams of conquering the most difficult "Luluheart Dungeon." However, he is incompetent and has been branded "Skillless," meaning he cannot even enter the dungeon. One day, a "Dungeon Break" occurs, causing monsters to overflow from the dungeon, and he saves a seriously injured girl. Her true identity is the Demon Lord Luluheart, who gives him a "chance to save the world." That is, to go back in time with Luluheart's power. Yukari, who has returned to six years ago, uses his ability "Return by Death" to take on the battle to save the world! (Source: Whomor, translated)

Takeru, a “Nurturer,” who was born into a family that trains monsters. To make money, he accepts requests from the Demon King and works hard to raise vicious monsters. One night, a wounded witch visits him and asks him to train Anna, a young girl. In fact, Anna is the last survivor of a legendary witch family… Will a bond be formed between Anna, whose ultimate goal is to destroy the world, and Takeru, the best “Nurturer” in the demon world? What will become of the world? [Original Webtoon](https://ebookjapan.yahoo.co.jp/stories/146280/)

Danterio, the “kind Demon King” who once saved the world from an angelic invasion, fights a final battle and then loses consciousness. When he next opens his eyes, he finds himself 600 years in the future—in modern Japan—reborn in the body of a young man named Daiya Mizukami, who died from bullying and an overdose of magic‑enhancing drugs. Learning of Daiya’s bitter regrets, the Demon King first deals with the problem right in front of him: he crushes the bullies who drove Daiya to his death in an instant. But when he looks at the wider world, he discovers that magic has weakened, and the angels he once defeated have begun to move again. “I am the Demon King, Danterio. I will teach you… how to kill angels.” Thus begins a modern battle‑action story where the strongest Demon King rampages through contemporary Japan, combining reincarnation, school life, and brutal angel‑slaying action.

The information-aggregated city TOKYO:M. In a future where even emotions are datafied and everything is created by prompts, people live competing for “Emo values.” In this city, people whisper about ICQ (Ico) and their companions ReVers3:X. ICQ, who possesses no emotions, has lyrics/prompts with the power to implement new emotions into the world. One day, a request comes to ReVers3:X: “Find a certain prompt”… A new “Music × Cyber SF” opens, set in the near future where lyrics create the world.

"I must make my brother happy." Titus, the Duke of Bernstein, became the mastermind behind the rebellion against the royal family in order to protect his sister, Maydis, from becoming the "Royal Sacrifice". However, he was ultimately cornered and killed alongside his sister. At that exact moment, Maydis returned from death to two years before Titus became a rebel. In order to avoid her brother's death and find out the secret behind the "royal sacrifice", she tries to approach Prince Diel, her brother's best friend... as his fiancé?! [Original Webtoon](https://ebookjapan.yahoo.co.jp/books/880823/)

When I woke up, I had been reincarnated as a minor villainess in my favorite romance novel!? The character I reincarnated into, Leila, is a side character destined to be mean to the heroine, hated by her fiancé, and die in a carriage accident. Using the time I have to move freely, I try to resist and change the story, but I can't seem to change the plot. However, one day, I realize that I can change the parts that are unrelated to the story. For my own sake, and for Leila's, I, who couldn't have a happy romance in my previous life, decide to find her destined partner!! [Original Webtoon](https://ebookjapan.yahoo.co.jp/books/882147/)

A peaceful farm girl is suddenly chosen to marry a ruthless emperor feared for his cruelty. Upon arriving at the capital, she’s met with hostility from his guarded eldest son and the quiet presence of his younger child. As she works to win the children’s trust, she discovers she holds a secret power vital to the empire. But to truly belong, she must do more than become a bride—she must become a mother and melt the heart of a cold ruler. [Original Webtoon](https://ebookjapan.yahoo.co.jp/books/908648/)

Everyone looked down on Root, a so-called weak adventurer, because his only skill, Guide, could do nothing more than point out the safest path during a journey. One day, however, a party leader named Marx requested his help to guide them through the deadliest dungeon—one from which no one had ever returned. Root successfully led them to the deepest floor, but when he warned them about a deadly trap, they betrayed him, using him as bait to escape. Trapped inside the dungeon, with a ferocious dragon closing in, the true nature of Root’s skill awakened. Guide wasn’t just about showing paths—it revealed the solution to any problem he faced! Thus begins Root’s rise from the “weakest adventurer” to a hero who can overwhelm any foe and carve the shortest route to saving the world.

Catacombs are labyrinths connected through gates that suddenly appeared in the world. These dungeons threw humanity into chaos but also captivated them. Only those who have awakened special skills—called Conquerors—can face the enemies that emerge from these gates. They aim to become the strongest players to save the world. The protagonist, Souta Sezaki, is the son of two players, but he failed to awaken any abilities. Making matters worse, he can “see spirits,” which causes everyone to treat him as an incompetent weirdo. One day, his childhood friend Takuto invites him into a gate, where they are attacked by the highest difficulty gate boss—the Queen Spider. As death looms, Souta finally awakens. His unique skill allows him to inherit the abilities of the deceased by resolving the regrets of wandering spirits within the Catacombs. The first spirit to appear before him is the wandering soul of his own father—the strongest flame sorcerer who died in battle. Together with his father’s spirit (manifested as a fireball), Souta challenges the Catacombs to become the strongest player!

The protagonist, Urata Nozomi, can no longer endure her fiance's emotional abuse and runs away from home. Soaked in the rain and at a loss, she bumps into Tojo Omi, a manager at the same company, and is allowed into his house to temporarily shelter from the rain. With nowhere to go, Nozomi bows and asks, "Can I stay for just one night?" Tojo then gives her permission to stay, but under certain conditions. The conditions are that she take care of the unfriendly cat he is temporarily looking after, and that she not see him as a romantic interest. Just as they begin their secret life together, a surprising event awaits...!?

"My Runaway Partner is a Great Mage with Intense Love!" Olivia, the princess of the Afite Kingdom, was destined to be offered as a bride to Graphais, the Demon King of the Desert, due to her unique constitution. However, on the day of her wedding, she is abducted by the great mage Ix. She takes refuge in Ix's house to escape from Graphais, but a life filled with his unwavering love is a series of bewildering experiences for Olivia, who knows nothing of love. She had accepted her fate as a sacrifice for her father and her country... Yet, her suppressed heart is gradually released by Ix—a love story of being loved and obsessed over by a great mage! [Original Webtoon](https://ebookjapan.yahoo.co.jp/books/879092/)