From TVTRopes: (Game information) After the sudden death of her parents, a young woman named Shiori Kanzaki find a picture of a man that she believes to be her grandfather, and travels to Azaka VIllage, where he was apparently from, in hopes of meeting him. However, when she arrives she instead finds that the tiny village has a museum that she realizes she lived in as a young girl. There she meets Sakuma, a middle school girl who tends to get herself in trouble, and Suga, the strange manager of the museum who only communicates in written memos. Suga grudgingly allows her to stay at the museum for awhile and research her family. But there is a legend in the village of "Kotori Obake", a demon woman who abducts children who go into the nearby forest. How is this story connected to Shiori's past, and why does she hear voices calling her, commanding her to "Come fulfill the promise"?

She must avoid dying in her second chance at life?!
A choose-wisely romantic comedy! ☆

On the day of her high school graduation, Ichinose Himari was shoved off to her death by her boyfriend, Taniguchi Shion... At least, that's what she thought, but when she woke up, she had gone back to when she was a second year student! To avoid dying by Shion's hands again, Himari thinks of a solution - - and that solution is to completely show Shion how she feels about him!

Himari's series of unfortunate events begins!

We can fall in love no matter how many times, but first love happens only once. “Romance is impossible in elementary school!” Koharuko, a 6th grader, is popular with girls because of her mature personality, but boys always pull a prank on her. She doesn’t like how childish boys are, so she wasn’t interested in anyone. On the other hand, since she fell for Ichijou, a brazen boy, everyday has been dazzling. It’s a real love story of a new generation set in elementary school!

[There was a pitiful girl who cried tears of diamond and lived while being abused by her family. But a prince appeared and killed off the entirety of the evil family. And so, the girl lived happily ever after with the prince.]

...is the fairy tale, but I reincarnated as the evil sister, 'Marcia Blick'?!

This damned household! I have to escape from this house now, at least! But if I run away, what about my sister who will be left behind? I've made my decision! We're going to run away together!

'Larisa. Let's go find that prince who will make you happy!'

But: "Please marry me."

Prince, why are you proposing to me? Your partner isn't me, but my sister! This sister of yours will make you a 'perfect ending plan'!

As the middle child who is neither the heir nor the cherished younger twins, Karina has lived her whole life hidden away from others. She, who only had one hobby of painting, found out that she only had one year left to live.

So without a plan, she went to visit her fiancé who she barely knew… To annul the engagement as he always wanted.

"I won’t beat around the bush. I want to spend a year here."

"....My Lady, have you gone crazy?”

"In return, I'll agree to annul the engagement."

But, she didn’t know then. That she would receive the unconditional love that she had never received her whole life from him, and that she would come to have a desire to live her once meaningless life.

I reincarnated as the villainess in a game world—
I’m not afraid of banishment, I’ll manage my territory and live as I like!

I reincarnated as Celistina, the villainess of an otome game.
As the fiancée of the crown prince, in this world where everyone is gifted with blessings by the gods and spirits, I’m the “young lady without a blessing”. As a result of being a fan of the game, I know that the crown prince will be with the heroine sooner or later, and he will break our engagement. Alternatively, if they don’t end up together, I will be executed…

The sweet yet tragic lives of the newly formed Shinsengumi and the delicious meals its members share.

Upon opening my eyes after a bus accident, I found myself in the fantasy world of a webnovel I enjoyed reading... the only catch is, I reincarnated 20 years before the novel begins! Reborn as Princess Yerenica of the small Lebovny kingdom, I'm determined to change the future in order to prevent the series of unfortunate events that will soon occur.

In the original story, my older sister, Tejavia, is pregnant with the future female lead, when she's suddenly kidnapped by the Belgoat Empire's emperor. But in my desperate attempts to protect her, I got kidnapped instead!

And as if that wasn't bad enough, my body is ridiculously weak to magic. But... strangely enough, whenever I'm by the emperor, I feel fine!

The only way to save the emperor, who's destined to die at the hands of his own son after marrying the villainess, and save myself from being afflicted by magic... is for us to marry!

"Marry me, Father."
"Father? Princess, I haven't married yet, nor do I have any kids..."

Princess Octavia was a high school girl until she was reincarnated into her beloved BL novel's world.
The fact that she's able to see her brother, the main character, and his lover so closely is a good thing, but both of them are male.
If so, won't there be trouble with future heirs?!
There's no way they'll make her take a political marriage to offer them a child, right?!
I don't want to be a character who's taken advantage of like that! If this is how it would be, I will surely find my own partner to be happy.....!!!

Deimos was once a handsome god. He loved a beautiful goddess who returns his sentiments. The problem, well, she is his sister. For their crime against nature they were struck down out of Olympus. The brother is now a demon and the sister a rotting corpse at the bottom of the ocean. Deimos must choose between his sister and her living human incarnation. His sister is jealous. The girl is horrified and unsure of just what to make of her situation.

Countess Ashley lived her life as a black rabbit in the Demon kingdom, but died at the hands of a brave hero. Now she’s reborn in the Tolpha kingdom, which is governed by his descendants. Suddenly, prince Clyde becomes her fiancé. It’s impossible, he’s her enemy!? But Clyde is happy to embrace Ashley. “Give me a hug?” “I can’t!” When I see his face my heart skips a beat...Is it terror? Or is it love?

Amelia, who dreamed of becoming an alchemist and worked hard, became the youngest alchemist in history to be appointed court alchemist.
However, she was harassed daily in her work at court.
In addition, her fiancé broke off the engagement and she has been exiled from court.
Amelia, who has lost everything, finds happiness in a new place with her childhood friend Thomas, with whom she has reunited...?

Jae-Hee is an addict of the trash game Infinite Dia. One day, she finds out that the developers of Infinite Dia are releasing a new gacha game called Terrarium Adventure.

Wanting to get the final secret achievement before the game is discontinued, she puts all her time into Infinite Dia. When she finally succeeds in getting the secret achievement… She wakes up to find herself in a world of fantasy and magic!!

Now, not only does Jae-Hee needs to figure out this entirely new world, she also needs to enlist of help of dryads to stop the world from burning!

The crown prince, Christopher's fiancee, while only in name, Eliana, is a noble lady that enjoys her life by reading books all day.

One fateful day, Eliana ended up knowing that there was a noble lady that apparently the prince was all affectionate with. Instantly, she thought that a girl that actually loved the prince appeared!!

And, while thinking about that, Eliana started to prepare for the approaching time of when her engagement would be canceled...

The book loving Noble lady that is making a lot of misunderstandings, a Romance and Fantasy story is at last starting!

Himeko Kurusugawa and Chikane Himemiya are two high-school girls at the prestigious Ototachibana Academy in the fictional Japanese village of Mahoroba. They are also the reincarnations of the solar and lunar mikos. When their ancient enemy the Orochi (the eight-headed Yamata no Orochi of Japanese folklore) rises once more the girls’ long-sealed personas awaken to defend the world!

'Kannazuki no Miko' Spin-off Manga and 4th alternate reincarnation of Himeko and Chikane.

Kannazuki No Miko - 1st alternate reincarnation
Kyoushiro To Towa No Sora - 2nd alternate reincarnation
Zettai Shoujo Seiiki Amnesian - 3rd alternate reincarnation

After being in a middle school full of Yankees and being humiliated by them all the time, Momose decides to change her appearance when entering high school; however, her clumsiness keeps getting the best of her, so she struggles to fit in. All she wants is to get away from the bad guys and it seems like she finally found a club to belong to, but the only other member of this club is not quite what he seems...

On her 16th birthday, Melissa, apprentice of the royal castle, decided to work outside the castle's limits. After becoming an official priest of the royal castle, she got to work with her beloved dragons, and well as the Dragon Knight captain, Hubbard, and his favored dragons. But all of a sudden, the captain quit!
A popular "ichijinsha bunko iris" work, the fantasy love story of a tough Knight and a dragon lover.

The conflicts and fights over daily trifles have never ceased between this pair of interesting siblings, the cool little sister "Secondra" and her funny elder brother "Minuto", but as long as one of them is in need of help, the other will never stand aside and do nothing. What a weird match! Now let's have a look at their friends. Joy Zhen, the old chum of Minuto, is a handsome boy with simple mind. Grace, the best friend of Secondra, is a warm-hearted girl who mistakenly regards Minuto as a bad boy. So here starts our story...

A girl saves Houjou family's third daughter from drowning herself. The girl takes her place as Houjou Ran who shall become the Tendou family's bride but her deceit is seen through..?

Yuna is serious and reliable, what will happen when she meets the mature yet slightly airheaded Biyori…?