The living and the dead have coexisted for a millennia, overseen by the Red Crows, a conclave of mediums who have power over the spirit world. However, in the early twentieth century, change is afoot…and a coming world war threatens the balance between mortals and ghosts! In the midst of this upheaval, one small ghost merely wishes to be left alone, and haunt her abandoned house in peace. But even the dead can have a great destiny that calls...

Although I should have avoided the death flags, suddenly the Heroine event occurs?!

A Japanese person reincarnated into an Otome game chok full of death flags for the villainess, Rosalind.
"I'm going to live an enjoyable life in this world!" Making full use of the game knowledge to avoid death flags, for some reason events keep happening one after another?!
Contracting with spirits, helping her father (the prime minister) with his work using her modern day knowledge, taking a walk with the holy beast... and on top of all that, even starting up the heroine's event...?
Will Rosalind be able to smash through every unknown death flag that comes her way...?!
And will she be able to be fluffy lovey dovey with the supporting beastkin character she liked from her previous life――?!?!

Note: Protagonist’s name begins as Rosalia, this is not a mistake.

The legendary martial master Simon was betrayed by friends and persecuted to death. Three hundred years later, he is reborn in an illegitimate child of the royal family who was deceived. With his past powers, Simon again creates his legend in this land. Surely, it must be a revenge and reconquer road filled with blood!

Jian Chen, the publicly recognized number one expert of the Jianghu. His skill with the sword went beyond perfection and was undefeatable in battle, After a battle with the exceptional expert Dugu Qiubai who had gone missing over a hundred years ago, Jian Chen succumbed to his injuries and died.

After death, Jian Chen’s spirit was transmigrated into a completely foreign world. Following an extremely fast growth, his enemies piled up one after another before becoming gravely injured once more. On the gates of death, his spirit had mutated, and from that moment henceforth, he would tread on a completely different path of the art of the sword to become the sword god of his generation.

Strength System, from low to high — Saint, Great Saint, Saint Master, Great Saint Master, Earth Saint Master, Heaven Saint Master, Saint Ruler, Saint King, Saint Emperor

Rosalia, a Marquis’ daughter, for some reason only lived within the premises of the Marquis’ residence. One day when she was sixteen, she fell in love with a red headed knight who wandered into the garden by accident. It was at that moment the powerful Marquis’ daughter felt something trigger― A knight who is a reincarnator, but doesn’t realize that he’s a capture target in an otome game and the main villainess, who began to change once she met the knight.

The heroine who has been reborn with the knowledge of the game would be the fall of Rosalia, however, it does not go through according to the scenario…

“What are you?! You’re the villainess, aren’t you?”

“Villain? You think you could play such an outrageous role? I am a genuine villainess.”

In 2021, Harry Makito, genius magician, was holding a one time only retirement show in Tokyo when he burned to death in an unexpected accident. He was 17 years old. Or so one would think. But he lived, finding himself reincarnated 400 years earlier in Medieval Europe during the age of the Witch Trials! Now he fights against the church which unjustly brands women as witches with his tricks disguised as miracles. It's like real magic!

Practice the nine-star Tianchen, and create your own myths! The original snail of the spontaneously snail "Nine Stars Tianchen" is adapted. The cartoon of "Nine Stars Tianchen" is a world where human beings, monsters and mysterious animals coexist, human beings are cultivating the spirits, the beasts are repairing the flesh, and the mysterious souls are repairing the souls. Read. There is a deep underground hearted Qionglou, a dead lake in the Bohai Sangtian, a mysterious palace, and a land for the forbidden domain of the Wraith. Legend has it that in the endless jungle wilderness, there are some very powerful forces. They are called demon kings. Some demon kings are extremely tyrannical, some demon kings are good at confusing, some demon kings are good at illusion, and some demon kings can Moving mountains and reclamation, some demon kings can trace thousands of miles. These demon kings rarely appear in the human world. Even if they appear, they are also incarnate in human form, and they are scattered in human beings to seek a breakthrough in realm.

A righteous prosecutor, life reset, punish the villain!!!!
A hot-blooded prosecutor, kim hi wu, was murdered and sunk into the ocean while chasing the tyrant who controlled korea. But, Kim Hi Wu, meets a grim reaper who gives him a chance to relive and sends him back to when he was 18 years old. As a high schooler, kim hi wu, prepares to punish the tyrant Jo Tae Sup.
“To get the devil, you have to become one”

After spending most of her youth fielding the attention of countless wealthy suitors, Suhee Kim finally finds true love with a steady boyfriend named Jinsu Han. But then tragedy strikes, and Suhee is murdered in cold blood.

To Suhee's surprise, she is immediately reincarnated as a baby girl named Sanghee Kim, who just so happens to be a princess! Plus, she is fully conscious of her past life. There's just one problem: in this society, women are seen as totally inferior, even princesses. Appalled by the treatment of women, Sanghee is determined to change the kingdom's patriarchal ways. Will Sanghee be able to succeed, or will she be stuck living her second life being treated as a lowly woman?

Everyone else wants to live forever while all he wants is to die. Others have to die while he couldn't no matter what, but he couldn't live, either. No matter how many times he dies, he'll be reincarnated and start a new life as a different person. But no matter how many times he revives, he won't live longer than one year and then he dies again. All this because the "Cops of Death" in the underworld miscalculated his lifespan which contributes to him being tortured! "When can I finally die?!" he howled and they kicked him to reincarnate again, but this time things are going to be more interesting...

Yulia is reincarnated in a world set before the start of an otome game. She started working as a maid in the castle, but she is serving the princess who appears as a villain in the game! "I won't let this cute princess become a villain!" Rumored as a tough, impregnable maid, she herself will make sure to show the princess happiness! She will use her knowledge of her previous life and the life of magic to change the future of the game is what she thought, but for some reason, a knight who showed interest in her appears! Not taking falling in love into consideration, follow this talented maid through her fantasy!

In the prolonged absence of the King and Queen of the Kingdom of Hearts, their daughter, Princess Eleonor, was compelled to hastily ascend the throne.

At that moment, memories of Eleonor’s previous life came flooding back to her, and it dawned on her that the world in which she currently resides is that of an otome game she once played…?

All the words that pass her lips turn into venomous barbs, leading her down the destruction route at full speed—!!

After Koganei was rejected by a girl he had confessed to, he angrily ran off and was hit by a car.

When he woke up, he found that he was reincarnated in another world as Theodore Goldberg, the eldest son of a marquis. And of course, as Koganei is no stranger to isekai series, he knows that he will have some sort of cheat skill to become overpowered and live a slow life.

And so he tries to open up his status screen... only to find that this world doesn’t have video game stats. He then tries to use his OP magic skills... only to find out he is too young to even learn magic. So then he tries swordsmanship... but turns out to be weak with the blade. And so he decides to just invent modern technology to get ahead... only to find out that this world has magical devices which are identical to modern technology.

Theodore is at an impasse. He’s not strong, he’s not smart, and he’s not handsome. So what exactly is his cheat skill? For what purpose was he reincarnated in the first place if he was just reborn as an ordinary boy?

Webnovel raw: https://ncode.syosetu.com/n0391dt/

I actually reincarnated into a different world and became the Demon King Overlord?! And my task is to destroy humanity! Wait, that ain't right. I'm a pacifist you know? I'm not like this at all? What? I killed a thousand human army with my energy blast?! That was an accident! It was the relic's fault! It's all a misunderstanding! Hahaha! Why can't we get along nicely? Huh? So what if I'm the devil? Doesn't mean I like doing bad things! Stop annoying me or I will blast you to kingdom come! Wait! Argh! Come on! I'm not that evil! I'm not the Overlord!

Our main character, Asai Manatsu, is the nice guy, who gets isekaid after he got dumped while proposing. Then he dies while trying to save a mysterious girl, but then wakes up in her body?!

Bullshit aside, this is just Dark Souls with waifus.

The main character, Lord Li De is the fourth son of Lord Yunyang of YongTian Kingdom. After being reincarnated into another world filled with monsters and magic, he tried to live leisurely, but his father had different plans for him. He tried to make Li De a sacrifice in order to make his first son gain more popularity and seem a bit more cruel. This manga starts out by showing how Li De struggles to escape from being a sacrifice, then consequently how he manages his own Territory and becoming a Lord himself.

This manga is adapted from the SF Light Novel "This Overlord Doesn't Care About Anything", which is being translated over at Re:Library by raltzero.

Japanese in her previous life, Lidi is a duke’s daughter in this life. Her fiancé is the Crown Prince, Freed, who is known for being flawless.
“No matter how beautiful he is, I absolutely don’t want to marry a polygynous royal!”
Troubled, Lidi came up with an outrageous plan for the sake of breaking off the engagement!
It’s a thrilling romance where schemes and fate cross!!

Bokura no Kiseki ~Another Stories~ is a volume featuring three sides stories for Bokura no Kiseki along with a few other works (mostly previously published in Arcana) by the author, Kumeta Natsuo.

The volume was published in July 2018, a couple months after volume 18 of Bokura no Kiseki.
Another story #1 also appeared in the July 2018 issue of Comic ZERO-SUM alongside Bokura no Kiseki ch. 75.

Unlucky girl from the modern time goes to another world, unexpectedly receives an incredible power, and capturing the crown princes from four countries' heart, all the way to become the imperial harem's lord?

Crown prince Cecil was so brilliant that everything in life was easy to the point of boring him, then one day, his fiancée Bertia suddenly said "Prince Cecil, I am a villainess!" Claiming that this world is the same as that of an "otome game" from her past life and that she is playing the role of the "villainess" in it, she aims to play her part well and have their engagement annulled. With that goal in mind, she sets about causing turmoil in Cecil's daily life.