Xiao Yao, a young lady of a wealthy, respectable family in the 21st century, thought her life had ended when she passed away due to a deadly illness. However, she opened her eyes and found herself in the body of a manhua's villainess, Princess Abella.

Despite not having any magic powers nor capabilities, the pompous and vicious Princess caused countless people to suffer from her heinous acts. Her greed for the throne even led her to murder her own father, thus sentencing her to death while the protagonists of the manhua lived happily ever.

With a second chance at life in such a healthy body, Xiao Yao will not sit back idly while the Princess' impending doom befalls her again. This time, she will strive to change the Princess' fate, and along the way, will attempt to discover her hidden secrets and of those around her...

Sakura is a high school girl who loves to clean. One day, she suddenly crashes into a Demon King from another world. Apparently, this world has fallen prey to a curse that forbids the use of cleaning magic...?! A modern-day high school student in an unknown world... can be useful by "cleaning"!? A super new and exciting otherworldly fantasy----!

Qin Fei is an ace agent in a special school. She was betrayed by her partner and lover when she was performing a mission in the Bermuda Triangle. She fell into the sea from the boat and into a crack of time and space, meeting a vampire on first day. The battle of a modern female agent against the ancient "old Draculas" in full swing.

Yuzuki is a call girl - a sex worker who doesn’t make prostitution her main profession. She gets sent to another world, and in order to get back to her own world she has to collect orgasms from all the different fantasy races that exist in the world she was sent to.

So yeah. It’s similar to JK Haru is a Sex Worker in Another World, but compared to that the fanservice is more explicit and the story itself less dark.

Alternative raw: https://seiga.nicovideo.jp/comic/40827

While immersed in a virtual reality MMORPG game, Yuuki was transported to another world where he adopts the name of his character Grosse Hendler, his goal being to make the most of his unique ability [mail order] to be a great trader in another world! All this while trying to enjoy a quiet life... will that be possible for him?

This is a brand new upgraded divine world. There are King Zhou, Jiang Ziya, Su Yuji and Yang Lan. All of them are peak figures here. Also, there are Kings and Three Emperors of Huoyun Cave here. There are Saints and Daoist sects here. Ancient Gods and Devils, Chi You and Xing Tian are here too. Last but not least, we also have a youth named Luo Lie. He will open up a new divine era where “he is not a hero but he is unmatched in the world”!

When other people experience a body transformation, it is inevitably either male to female or female to male.

Me? I wake up to find myself transformed into two different bodies.

Both a male body and a female body, one conscience operating two bodies, all sorts of embarrassing moments.

Walking together normally makes other people think that I am sweethearts with my other-self, such sadness.

Also, the entire business of a hero rescuing the beautiful maiden, I call Bull.

I get slashed by a sword and my female body gets abducted, and he wants me to thank him?!?! Can it be less of a tragedy?

An ordinary Japanese man dies and is sent to another world.

The twist, though is... well... you know that Pixar movie Onward? Or Bright, the one with Will Smith? Basically, a setting where magic and dungeons and dragons are all real, but so much time has passed that they’ve developed a society similar to ours so you have orks working on their college dissertations in coffee shops while siren baristas use magic to create more decaf? Where political leaders instead established protests in segregated taverns to establish equality between humans and demonkind? Where farmers peddle mandrakes and slime extract at farmers markets so that health-savvy elves can make potion smoothies and then post a picture of them on Instagram?

Yeah, it’s like that. Anyway, enjoy the story of the MC realizing that none of his skills from the old world will wow people in this new world because they already invented soy sauce and crop rotation and double-book accounting on their own.

https://www.pixiv.net/en/artworks/77644407

Haruto is an ordinary Japanese student who is tired of constant work and study. After getting trucked, he is reincarnated as Phil Graceheart, the youngest child in a royal family. When Phil is three years old, he gets a head injury that causes him to remember his former life. Armed with the knowledge of his past self, he is now on a mission to live a completely relaxing and carefree life.

From Seven Seas:
Three things you should know about Touga Eita, second-year high school student and heir to the Touga-style ninjutsu dojo: First, he really, really loves video games. Second, when given a choice between heroics and saving his own skin, he will always choose the latter. Third, he's never so much as kissed a girl.
All this changes when a voluptuous girl with wings and taloned feet named Aero appears and calls on Eita to help save her people-the harpies of Re-Verse-from the merciless onslaught of giant robot monsters known as Gigas. Eita will follow his newfound harpy friend into a whole new world, filled with monster girls and fantastical creatures beyond his wildest dreams.

I was reincarnated as the daughter of Duke Lystil, who has been serving the Royal Family for generations. By using the clairvoyance skill that I possess, I had divination about a battle over the family succession caused by myself in the close future, which would also cause an uproar huge enough to shake the country... To avoid such dispute and live an enjoyable life peacefully, I decided that I will run away from home!

But with the Tsundere Prince ・Self-centered Servant being all over myself, it's quite hard for me to go and disappear!!

Due to a god's mistake, high schooler Tsuguna died before his time. In exchange, the god agreed to do him a favor in his next life. Tsuguna is reborn to a noble household in a world with magic. He has an unusual form of magic that he requested from the god, the ability to create summoned creatures. However, his dark Japanese hair and eyes mark him as a cursed child in this new world, and his powers are slow to appear. He's kept in a dark basement where he reads his family's books, until one day he finally uncovers the key to his powers. Finally, he can set off into the world with his summoned companion to level up his skills!

Shize, who has been living a fugitive life in Japan, was summoned to another world. Finally found a place full of happiness she belongs to, she got married to the king and gave birth to an adorable baby girl. Suddenly the head Priest of the palace forced her to return to the earth?!
You’re kidding me, sorry but I’m not going back!

While running from the evil hands, Shize escaped from the palace but...? The reason for the Queen's Escape, Long Awaited Comicalize!

Ukei Kaito fought a desperate struggle in order to fulfill his role as a summoned hero. He defeated the Demon Lord and saved the very world, only to meet an end filled but with betrayal. The companions that he’d trusted throughout his journey betrayed him and killed him by sticking a blade through his chest. It was then that he swore to himself. He swore that, if given another chance, he would no longer so rigidly cling to the concept of “faith.” He swore that, if given another chance, he would dedicate himself to enacting the most atrocious act of revenge possible. He swore that, if given another chance, he would do things right. 「I’ll kill every single last one of you… I swear it…」 And so, he died, leaving behind not but a series of menacing last words — but his story had yet to end. A voice resounded through his head and informed him that there was more to his fate than what lay beyond the grave. 【The following is a system message. Tutorial Mode has been terminated.】

The protagonist, an egocentric man who's led a successful life as the CEO of a company in modern society is murdered and reborn as a beautiful lady named Paril from a noble family in a fantasy world. Once he wakes up, (now in the body of Paril,) he finds out that he's now in the body of an "inferior being" and that all his wealth, achievements and successful life have vanished. Therefore, he decides to rebuild everything from scratch and make it to the "top of the pyramid" in this parallel world.

Diet... to avoid the Bad End!
In a former life, Cosette was just a normal housewife. Now she's been reborn into the world of an otome game, not as the heroine, or even the villainess, but as a chubby unnamed NPC?! Is she destined to be pushed aside as the heroine follows her route, or can Cosette avoid the dark future that awaits her?
With six years left before the game's story begins, her first step is to improve her image. She'll use all the high heels, training equipment, and knowledge from her former life that she can to get herself into shape!
As she works to carve her own path, she gets wrapped up in royal intrigue, and winds up getting to know the prince?!
How will things turn out in this unconventional love comedy?!

Akito wants the stereotypical isekai experience and so he summons himself to another world, however things don't quite go as planned. He's the same unskilled loser that he was before. He can barely scrape together enough money to eat. One day a cute girl approaches him with a contract to join her party. He can't read what it says, but ends up being forced to sign it anyway. What's the worst that could happen?

In the world of Eluveitie, elves and dark elves have been warring since ancient times. The one thing that could tip the balance for either side is a half-elf child born from the nameless Earthling main character's seed. This is a tale of the drama and tragedy of the battle for one generic harem lead's baby batter.

From /ak/ Scans :

Sick of the trickery in the royal court, former knight captain Hans now serves at a remote station in the countryside. But his peaceful and idyllic days end when some Japanese people with superhuman abilities suddenly show up.