Sayama Takahiro, a carefree high school student, was transported to a fantasy world identical to the one in a VR Game. His go-with-the-flow attitude eventually overpowered his desire to return home, and now he runs Free Life, a small business dedicated to fulfilling the requests of its customers. Assisted by the hard-working Yumiel, what kinds of jobs will Sayama end up doing? If only someone would hire him to sleep till noon.

When Theodore was dropped into a waterway by his half-brother, he suddenly recalled the memory of his past life. He had been a Japanese citizen known as Kirishima Kagehisa, placed inside VRMMO character he had made in Break Force Online. "Theodore" is a Combat Mage that Kagehisa played within BFO, and he realized his skills were progressing well even in this other world. Theodore, who had lightly brushed off his half-brother to make his own place in the world, had ventured off to the large labyrinth existing at the Boundary City, Termuilles.

In the year 2045AD, Earth is invaded by four different worlds. To defend the planet, one must conquer the dungeons connected to each of these other worlds. Each country selects Explorers to take on this task, and Gunma, an ordinary man chosen in Japan, is suddenly thrown into the front lines of the attack!

Scared and overequipped, he activates his [Listening[ and [EnemyDetection] skills. Then, he encounters the strongest and most beautiful girl in all of mankind! While being pushed around by the girl, who is too strong for her own good but has a tofu mentality, he rushes through the dungeon at breakneck speed...

This is an unprecedented dungeon fantasy that loosely knocks down everything!

Hyejung loved to read to escape her daily stress. But that's before she woke up inside the bizarre world of her favorite novel! Instead of the main heroine who courts three eligible men, she is now Latte Ectrie - a minor villain that everyone hates?! One way or another, it's a chance to live out her most beloved storyline, with popcorn in hand to watch all the drama! Taking charge of the narrative takes on a whole new meaning!

From MangaHelpers:
29-year-old programmer Suzuki Ichirou finds himself transported into a fantasy RPG. Within the game, he's a 15-year-old named Satou. At first he thinks he's dreaming, but his experiences seem very real. Due to his use of a 3-time-use special power (meteor shower), he ends up wiping out an army of lizardmen and becoming very high level. He hides his level and plans to live peacefully and meet new people, though developments in the game story (like the return of a demon king) might get in his way.

The protagonist along with his step-mother, and 2 step-sisters are summoned into another world where demi-humans are the rulers as saviors, but its not to fight against a demon lord, its to fight an Undead Apocalypse monsters called "Dead Mell" that have overrun the world and that can only be killed by using weapons made with holy silver.

For that, a familia is made (group of 4 people) with them being the swordmaster that uses the holy sword, the guardian that uses the power of earth to protect, the healer that use the power of water to heal and the black mage that uses the power of fire to destroy.
The role of the guardian, the mage and the healer is to support the swordmaster that can only kill the monsters.

But to use magic powers one must offer part of your being as a sacrifice to form a contract with spirits, and the higher the sacrifice, the higher the power. Now they must choose who are the 3 that need to sacrifice part of their bodies to gain power and who will wield the holy sword.

After the gods dropped her in the world of her favorite fantasy romance novel, Lithera was quick to realize that happily-ever-afters were never easy to get. Given another shot at happiness, she is now determined to avoid the mistakes of her previous life, starting by meeting the sweet and caring Grand Duke she spent years exchanging letters with… Another typical female lead, with another typical Duke, promised to wed. Will this story go the typical path we all expect?

After losing his life because of his own womanizing badness, the reincarnated former Great Sage Akiba Kenji contracts with the Great Demon Gremory in order to become the Great Sage once again, but that contract provides the opportunity for his MAX-level yandere followers, who continued loving him even after losing him, to find him, and they won't let him get away......!? All heroines confirmed yanderes!

As the master of the School of Unholy Arts and as the undefeated Unmasked Demon, MookHyang unfortunately falls to a strange fantasy world by the magic of his enemies (School of Blood Arts). In the new world of elf, sorcerer, knight, and dragon, MookHyang’s adventure of finding a way back to his old world (Murim) unfolds.

Kakyu, a former Japanese who was reincarnated as a low-level demon in hell, has acquired unparalleled strength over two thousand years. However, unexpectedly, he is exiled to another “different world,” liberated from the harsh underworld.

Kakyu, who was enjoying his dream slow life, witnesses the village he owes everything to being attacked. Despite rushing to the scene, the village is annihilated.

Picking up the only surviving baby, Alus, Kakyu resolves to raise Alus to become the happiest person in the world to repay the debt…!?

Realistic take on a modern doctor in another world treating fantasy creatures without magic or modern equipment

In this world, It's only me who can get stronger by eating Magic Stones!

At one point, I received an offer to have a smooth life reincarnation from the Goddess-sama... But the skill I got as a prize is Toxins Decomposition EX. Ugh, what a plain skill! Its so pitiful that even my own family makes fun of me...
However, one day I realized that because of this skills effect, I can eat and gain power from Magic Stones! I've also been notified that I'm the prince from a neighboring country!? What awaits me in the castle are days of experimenting with Magic Stones and training, the perfect environment for me to become the strongest man there is...
And to top it off, I received the Magic Stone of Dullahan!
The story of a boy on the path to become a King while being chased by an assertive fiancee and Female Knights starts here!

Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction. As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!

I woke up to find myself transmigrated into a novel as the “background character that's doomed to die.” Now stuck in the body of a six-year-old, I’ve got some serious challenges ahead of me. But I’m not about to let fate have its way. Even if I have to become the villain, I’ll do whatever it takes to survive!

"It has been 4 years since the original heroine ended her life as a maid.
A handsome man came to see her.
He was a man who looked like the young lady that she used to serve.

"I'm here to keep my promise, Blair. You said that you'd be with me for the rest of your life."
"No way.... Young Miss?"

At that moment, the man's crimson eyes turned to meet mine.
He bent down till our noses nearly touched and kissed my hair.
And whispered.
In a very sweet and beautiful voice.

"You have to call me Young Master now."

...... Huh?"

Kurokawa Lisa is an ordinary office worker, who has practiced lots of cooking while living alone. One day, she wakes up in another world, with a concerned little spirit hovering over her! She has apparently been transported to a magical, spirit-filled realm by the will of the goddess, and there is no known way for her to go back. She is taken in by a wealthy couple, and they and her new spirit helper treat her with nothing but kindness. There is one problem, however—the food in this magical world is gross! Lisa insists on helping the household cooking staff prepare a traditional meal from her world, and it is a big hit with her hosts. Soon Lisa knows what she should do in this new world; she should open a cafe and treat everyone to delicious food!

“O, Hero!” With that cliched line, Kazuya Souma found himself summoned to another world and his adventure-- did not begin. After he presents his plan to strengthen the country economically and militarily, the king cedes the throne to him and Souma finds himself saddled with ruling the entire nation! What’s more, he’s betrothed to the king’s daughter now?! In order to get the country back on its feet, Souma calls the wise, the talented, and the gifted to his side.Five people gather before the newly crowned Souma. Just what are the many talents and abilities they possess… What path will his outlook as a realist take Souma and the people of his country down? A revolutionary transferred-to-another-world administrative fantasy series starts here!

Kento (30 years old), won 1 billion yen in a lottery.

In order to enjoy a nice slow life for the rest of his days, he bought a small uninhabited island off the coast of Southern Japan. However, one day he finds an unconscious woman on his beach that should not be there. When he runs up to check on her, he notices some rather sharp edges...

The behaviors Elize brought from the other world are a little, bit exciting for a normal guy like Kento...

“A naive middle-aged guy” and “wandering elf...” a happy cohabitation between the two of them on a resort island, begins now.

An old MMORPG called Live Dungeon. Before the service was terminated, Kyotani Tsutomu made full use of 5 notebook PCs to clear the game and was invited to a different world. And then, Tsutomu was speechless when he saw a live relay of a dungeon capture in the different world. They bulldozed through without any thought of strategy. The misfortune of getting the healer position. Tsutomu reinstated the White Mage that had always been his favorite in games and aimed to conquer the dungeon to find the key to his escape from the different world.

An ordinary family that loves cats. One day, the whole Tanaka family died during a major earthquake. When they woke up, they were reincarnated as the Stuart family, a noble family from another world.

Though everyone is dressed in the Western style, they have memories of their previous Japanese lives. Even though they’re confused, they've gotten used to living in another world.

Original Web Novel: https://ncode.syosetu.com/n1970fg
Light Novel Release: https://www.kadokawa.co.jp/product/321912000220