Ao Sato is accidentally swapped with himself in a parallel world with a male/female ratio of 1:39.

He finds a kind family and lovely women at the place where he was switched.

Seeing the outside of these women, he's relieved to see that the number of men and women has changed, but not much else.

However, their inner lives are filled with conflicts and troubles.

I reincarnated into my favorite genre for novels. I became the villainous aunt who mistreats the young protagonist. I felt sorry for my nephew who would grow up as the protagonist in a revengeful plot, so I’ll try my best to take care of my nephew until his uncle shows up and takes him as per the original plot. But then… “Oh, mom!” I’ve become his mother all of a sudden? “I don’t know your circumstances, but how could I bear to separate a mother from her son? Lady, come with us to Vintervald.” Hey, Kim Luka! How are you going to fix this misunderstanding? (Synopsis : Gourmet Scans)

A wandering prince is set break an ancient curse bewitching the Kingdom of Amaryllis by waking up its princess with a kiss of true love. However nobody told him there were 7 princesses to kiss and he must now take responsibility by live with them while they find out why the people of Amaryllis are unable to wake up. Will they reach a happily ever after?

Shizuka is a normal schoolgirl who can see ghosts. She works as an assistant to a famous exorcist named Kamui-san. Kamui-san's exorcism technique is… unique.

[NO. 4212: 'Humanity' has failed the Demotion Match.]
[NO. 4212: ‘Humanity’ has been deemed useless. Beginning deletion.]

As Earth was being erased after their final game ended in failure, Martial Saint Sung JiHan managed to resist deletion and saw messages pop up in front of him.

[To think someone would be able to resist being erased.]
[Let's give him an opportunity to re-challenge.]
[Player 'Sung JiHan' is returning to the time of initial entry in The League.]

When he woke back up, he had regressed back in time. Given a second chance, he swore to himself to stop the fall of Korea and humanity and take flawless vengeance against those that ruined things in his original timeline.

Follow the journey of Korea's Martial Saint, Sung JiHan, as he struggles to prevent a future of destruction and ascends as the Martial God!

Late at night, a loli spirit drives a girl away from work.

In 1912, a young woman tracks down the elderly Nagakura Shinpachi, determined to hear the true story of the Demon of the Shinsengumi, the Vice Commander Hijikata Toshizou. Hijikata's story begins in 1859, when he is a violent young man honing his sword skills while peddling his family's medicine. Soon, in his quest to find stronger people to fight, Hijikata starts to come into contact with others who will eventually be his comrades in the Shinsengumi. The first one to make an impression on the brash young man is Kondo Isami, who proves to be a better fighter than Hijikata...

Hinako, a friend of Asahi's older sister, is a frequent guest at the home of the high school boy. She always misleads his mind with her suggestive attitude while treating him like a little brother...or rather, pet? A love story between a gal who has a bugged sense of proximity and an otaku guy who acts like her parent!

After his traumatic years in junior high school, the ultra-introvert Shizuki Keisuke decides to turn his life around, and gives himself a complete make-over for his high school "debut." His new high school life seems promising, as no one is aware of his hidden past...except for one person: Kusunoki Shizuka, who also changed herself in pursuit of a more successful high school life! As their fates intertwine, will Keisuke ultimately be able live a peaceful life in high school...?!

A man who was once called the world strongest agent ended up becoming a teacher after his retirement to train the new generation of agents. After many years of training his disciples, he is killed at the age of 60 by the ploy of a secret organization and was reincarnated in another world with all his past memories.

Though he was surprised by the magic and the strange species of that world, he adapted very fast to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his tight discipline, in order to reach his goal: Resume his career as a teacher which he left halfway through in his previous life.

This is the story of a man, who, based on the memories and the experiences of his previous life, became a teacher who travels through the world with his students.

The manga centers on Yuru, a boy who lives in a remote mountain village, spending his time hunting birds and being one with nature. But one day, Yuru's younger twin sister Asa is called to serve in the jail at the heart of the village, her duty also confining her there. Yuru slowly unravels the unnatural mystery hidden beneath his quiet village.

Final Fantasy: Lost Stranger was released as part of the Final Fantasy franchise's 30th anniversary project. The manga follows a Square Enix's employee who dies, and is reincarnated into the world of Final Fantasy.

There exists an evil organisation that intends to invade planet Earth.
The man called "General" fights everyday against the Earth's Defence Force, the "Rangers"!

However, today is his day off.

General of the Three Kingdoms, Kongming had struggled his whole life, facing countless battles that made him into the accomplished strategist he was. So on his deathbed, he wished only to be reborn into a peaceful world...and was sent straight to modern-day party-central, Tokyo! Can even a brilliant strategist like Kongming adapt to the wild beats and even wilder party people?!

“Tia, your brother has to do well for you to do well.”

By committing all sorts of evil acts, she made her brother the emperor. But her dedication was rewarded with betrayal. At the brink of death, the one who extended a helping hand was her arch nemesis, the righteous Grand Duke Cedric.

"Devise a plan."
"..."
"I can't think of anyone else who could turn the tables in this situation, Lady Rozan."
"..."
"Lend me your strength."

It wasn't possible to restore the balance of power for an empire that was already falling into ruin, but there was a way... to turn back time before everything went wrong.

With her blood and tears, she sacrifices her own body to cast ancient magic in order to turn back time.

This time, she wouldn't fail.

Returning back to her 18-year-old self, Artezia resolves to become the villainess for Grand Duke Cedric.

"Please ask for my hand in marriage. I will make you the Emperor."

A male engineer transmigrated into another world, and became a prince. This place strikingly resembles the Middle Ages of Europe, but at the same time, it seems kind of different? Witches truly exists, and they even possess magic powers! Magic powers are productive forces! Save the witches, liberate the productive forces! Open map, fight demons, break conspiracies, climb up the science and technology tree, and open the path of hardcore ‘farming’!

You know the deal by now. Middle-aged office worker gets sick and dies. He meets God, who tells him that he can be reincarnated in a new world. Our main character accepts, and decides to become a farmer.

Welcome to farming in an alternate world.

Women are not allowed in the Knights Order of this historical kingdom!

But the acting captain of the knights is an elf woman, itself?! Enjoy the days of Gilga-san, the strongest and coolest, but in fact a maidenly, innocent elf captain knight!!

[Would you like to reverse time?]
[All your abilities will be reset.]
[Please choose the date.]

“February 28th, 1985. The day I was born.”

Financial power. I will gather all the fortune of the world—
and create a monopoly. I will monopolize all the dungeons of the world.

I will do this now, while the world is still peaceful...
before it all begins.

Regina, whose father was the emperor that got assassinated, became the regent on behalf of her younger brother.

While facing plenty of hardships, news about the depletion of national funds due to her maniac younger brother's behavior, as well as her fiancé having an affair, begin to spread...

In the end, she loses everything when her fiancé commits treason.

In her last moments, she turns back time using the relic of the first emperor. In order to stop the main culprit, Regina declares that instead of a maniac, her brother will become a love-crazy fool.