The Hidden Dungeon Only I Can Enter

High school student Michio Kaga was wandering aimlessly through life and the Internet, when he finds himself transported from a shady website to a fantasy world — reborn as a strong man who can use "cheat" powers. He uses his powers to become an adventurer, earn money, and get the right to claim girls that have idol-level beauty to form his very own harem.

After dying in a fight against the forces of evil, a knight found himself reincarnated as one of the most powerful monsters in the world: a behemoth! Problem is, he has to grow up before he can really strut his stuff, and a baby behemoth looks an awful lot like…a housecat?! And when an elf adventurer decides to take him in, she may need his help as much as he needs hers!

In Orario, fearless adventurers band together in search of fame and fortune within the underground labyrinth known as the Dungeon. But Bell Cranel, novice adventurer, has bigger plans than riches and glory; he fights monsters in the hope of having a fateful encounter with a girl. When this happens, it doesn't go exactly as he planned. Thus begins the story of an unlikely pair, a boy and a goddess, both trying to prove themselves, both eager to reach their goals.

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!

Thirty years ago a strange phenomenon called a "spacequake" devastated the center of Eurasia, claiming the lives of at least 150 million people. Since then, smaller spacequakes plague the world on an irregular basis. Shido Itsuka, a seemingly ordinary high schooler comes across a mysterious girl at the ground zero of a spacequake and learns she is one of the "Spirits" who are the real cause of the spacequakes that occur when they manifest themselves in the world. He is recruited to make use of his mysterious ability to seal the Spirits' powers thus stopping them from being a threat to mankind. However, there is a catch: to seal a Spirit's power, he must make her fall in love with him and kiss him.

The skilled hunter Kikuru Madan has decided to retire out of fear of wasting his youth. One day, a guild staff member suggests that he go on a quest with a new female martial artist named Hitamu Kyan. However, she keeps getting hit by monsters one after another.

Makoto Misumi is just an ordinary high school student living a regular life, but all of a sudden gets summoned to the other world to become a "hero." The goddess of the other world, however, insults him for being different and strips his "hero" title, before casting him off to the wilderness at the edge of the world. As he wanders the wilderness, Makoto encounters dragons, spiders, orcs, dwarves, and all sorts of non-human tribes. Because Makoto comes from a different world, he is able to unleash unimaginable magical powers and combat skills. But just how will he handle his encounters with various species and survive in his new environment. In this fantasy, Makoto tries to transform the other world into a better place despite the humans and gods having turned their backs on him.

Destructive monsters from the Mato dimension threaten the earth, while women gifted with powers from Peaches try to stop them. But to save the world, Yuuki must be willing to become Chief Kyoka's servant both on the battlefield and at home.

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.