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.

“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."

"Hanako-san, Hanako-san...are you there?"

At Kamome Academy, rumors abound about the school's Seven Mysteries, one of which is Hanako-san. Said to occupy the third stall of the third floor girls' bathroom in the old school building, Hanako-san grants any wish when summoned. Nene Yashiro, an occult-loving high school girl who dreams of romance, ventures into this haunted bathroom but the Hanako-san she meets there is nothing like she imagined! Kamome Academy's Hanako-san actually is a boy!

Losing his memories, the curtains of the story of alternate world transfer of the MC rises. After the transfer his name changes to Kelvin. While steadily levelling, he adds new subordinates by mastering his skill. And by the time he noticed it, he had obtained overwhelming power. Where will our MC be heading off to?

A freelance designer loves to relax from work through gardening on his balcony. There he starts talking to his new neighbor next door over the wall without knowing her face.

A middle-aged detective, Eiji Kirisame (40), meets a strange high school girl at the scene of a certain crime. She doesn't speak a word, but she helps solve the case using her drawings. However, suddenly this middle-aged detective is getting a marriage proposal from this girl!

Mamori Wataya is a tall but dark, plain, and shady high school girl. One day she meets Kanashi Fuji, who has a small, thin body and an evil-looking smile. A supporting character that no one can find and a villain that no one likes. This encounter turns their gray days blue.

Jiang He, a girl from the Tang Dynasty, traveled through a thousand years and appeared in front of Xu Qing. Fate brought together this love that spanned a thousand years. Everything the girl was familiar with has become history. Relatives, friends, and enemies have all been left behind 1,200 years ago. The boy is unreserved and leads the girl to start a new life. Pain, confusion, cheers, and laughter will remain in this new world.

I, Yvonne, reincarnated into an otome game as the rich villainess. According to the game's plot, a character loathed by everyone such as myself has the main role of bullying the heroine, pushing her towards the various love interests' romantic routes. But it seems like there's something wrong with Elsa, the heroine! She's getting too close to me!

Note: The translation of the original web novel can be found here: https://dynasty-scans.com/series/please_bully_me_miss_villainess_novel_ver

Ex-idol trainee Kiyu has lived his whole life adored by everyone for his good looks. But he dreams of ordinary high school life, so when he puts on glasses to blend in with his peers, he finds that making friends is a lot harder when you don’t have your looks to fall back on. Not to mention he’s also socially awkward, his new seatmate has a permanent scowl on her face, and his fans have tracked him down at his new school.

From The Company:
Gods with everlasting lives. Sura who possess unrivaled power. And humans, caught helplessly in-between.
When Kubera’s peaceful village meets its fiery end, a mysterious magician named Asha comes to her rescue. Together they begin on a journey in search of answers and revenge. Meanwhile across the realms, a web of entwined fates is growing tighter. One by one the other players of the game will emerge, each with their own agenda to pursue.
At the center of this maelstrom stands Kubera, the girl with a god's name. Will this sixteen-year-old be the salvation of the world or its destruction?

The manga will focus on the character Koharu Hidaka, who is a middle school teacher close to 30 years old in 2007.

A clumsy, but cheerful girl and her boyfriend (a cat?!)

http://comic-polaris.jp/odette/

From classmates to brother and sister, living under the same roof.

After his father’s remarriage, Asamura Yuuta ends up getting a new stepsister, coincidentally the number one beauty of the school year, Ayase Saki. Having learned important values when it comes to man-woman relationships through the previous ones of their parents, they promise each other not to be too close, not to be too opposing, and to merely keep a vague and comfortable distance.

On one hand, Saki, who has worked in solitude for the sake of her family, doesn’t know how to properly rely on others, whereas Yuta is unsure of how to really treat her. Standing on fairly equal ground, these two slowly learn the comfortable sensation of living together.

Their relationship slowly evolves from being strangers the more the days pass. Eventually, this could end up in a story about love for all we know.

The archmage who ruled over a magic kingdom.
One day, she was reborn as the youngest daughter of the empire!

“I’ll just play along and pretend to be a baby.
...But don’t you think you guys like me a little too much?”

They won’t leave her alone.
The youngest princess is tired today as well.

Terazaki Kaoru is about to meet up with his online friend, Nanami. But Nanami doesn't know Terazaki is a guy in real life! He's sure to be disappointed and at least a little weirded out. But Terazaki is in for a surprise...

In the novel "The Emperor and The Saintess," the male lead and heroine were able to defeat the cursed dragons and the demons, as well as the final boss of the story, with their beautiful love.

"...Haha. I'd rather die now, so I can go in peace."

Rather than having a brilliant future and being hailed as a genius mage, I just want a secure future where I can have a comfortable retirement...
That's what I wish, but when this world comes to an end, I'm the final boss.

Please, just let me live....
However,

"Wait, isn't this the male lead, Siegren?"
"Why is he here?"

Siegren, the heroic male lead who will save the world, is dying right in front of my eyes?

The male lead whose mind and body were all tattered from rolling around in the battlefield.

"Siegren, I'm sure you'll have many things to do in the future."
"I promise to help you achieve that."

When I saw Siegren's wounds, I made a promise.

This person, who suffered because of the lines I wrote. I promise to bring him happiness, a brilliant future, and a comfortable life.

Though Ayase Yuu is the son of a renowned and talented actress, he is below average in anything he does. He is entrusted to live under the care of his mother's friend, and later discovers that he will also be rooming with the three sisters from his school who possess both beauty and talent. Though Yuu thought that an understanding would be impossible to reach between an ordinary person and those blessed with talent, the three sisters are surprisingly...?!

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?

The daughter of a duke, the stuttering Maximilian, married a knight of lowly status at her father’s coercion.

After their first night, her husband departed for an expedition without another word.

He comes back three years later, this time as a famous knight in the whole continent.

How would Maximilian face him on his return?

"The more I think of you, the more lonely and lonely I become. I don't know why I can't quit even though it's so painful."