In his past life he was the most loyal personal guardian, but because of a misunderstanding he lost it all forever. In this life he keeps searching for traces of her. He transforms into a small charming "problem" for her. Will there be a clear path to pursue love? Who is he from the princess dreams?

When Makita Maki, Hasebe Kokoa, and Tachibana Rinka are hit by a truck, they're transported to an unknown location. After fooling around, they eventually figure out that they're in another world. With their phones still connected to Twitter, now they must try and live in this fantasy world.

Alien lifeforms have taken refuge on Earth to start their lives anew, however these beings don’t seek cohabitation, they want to phase humanity out; Working together, these Aliens prey on human flesh and spiritual energy and can implant their essence on human females to bear their children. Benimaru is one of these children, but his mother also happened to be a Medium. By manipulating Benimaru’s spirit while he was in the womb, she managed to give him a human heart. For this, she was brutally killed and devoured by Benimaru’s alien father. From that point on, Benimaru swore to exterminate these creatures. Half-human and half-alien, one man wages war against an entire race!

A man has a girlfriend but he dies, and then he possesses a school girl and rushes to meet his girlfriend.

Truck-kun's latest victim finds out what it's really like to have the Ultimate Cheat Skill.

Shockingly, there are no slave harems.

A girl wakes up in a foreign world after an drowning accident and is suspected to be the 'dragon priestess'.

This story begins in the paradise/heaven, where souls, before being born, can choose their mothers. The protagonist notice a girl who has run away from home, and he decides to down to earth and become his son.

From Viz:

Are the woes of the present meant to be endured for the promise of a better future or to atone for past wrongs? In a captivating epic of love, fate, and faith, seven young people must struggle with this spiritual puzzle as their alien past lives threaten the future.

This series is a complete remake of the original Mao Dante, with new designs an a story slightly inspired by the anime of 2002. This time, the timespan of the story is longer, the character design is different, and all unanswered questions left when the original series was interrupted, are answered. This time, Mao Dante has a proper ending.

Through the course of unlikely coincidences, a man and woman meet again and again in three different lives. What will become of their love in the world of the immortals?

Seto Yu is a 12-year-old boy, that is abused violently by his father. One day, he is transported into a fantasy world with video game mechanics after being killed by his abusive father and he discovers that he has the unique ability to steal other people's skills for his own use. He quickly uses his special power to take revenge on the townspeople who bully him and obtains a harem of beautiful girls who love him unconditionally even though he shows no romantic interest in any of them and has the physical build of a skinny teenager

From Broccoli:
Princess Alita must protect her kingdom from a coup d'etat. But on her way to get help, a magical mishap trapped her inside the body of a bounty hunter named Falis. Now Alita must rule disguised as a servant as the battle-savvy Falis sits on the throne in her body.

And thus the story about the strongest and most violent princess in the history of the kingdom begins.

Reincarnated to a werewolf magician, the Protagonist Vyett was instated as the vice head of the Demon Lord's third brigade force. Occupying a remote market town, he was entrusted to management and defense.

"As a former human, born a monster, I can understand the sentiments of both sides well enough. Because of that, those around seem to think I'm a man of wisdom, or something of the like, but it's really just one trouble after the next. I have to follow those monsters that are overly quick to resort to violence, and do something about the humans, who start to complain immediately. So today as well, I'll do my best at managing the Demon Lord's main force."

Official manga page

The great demon Mao Dante, exploiting the weakness of a boy exposed to his demonic influence in his dreams, is awakened from a thousand-year sleep. The intent of this being, a survivor of an ancient and forgotten civilization, is to wipe out the whole human race.
But it's not that simple: the motivations of the demon aren't so wicked as one might think, and they will combine with the life of the boy, which hangs between nightmares and craziness. In the meanwhile, the Satanists fight against the hierarchy of the church to obtain a justice which is, as it's easy to guess, that of the demon Mao.

This series didn't have an ending until its remake in 2002. Nagai took many ideas from Mao Dante into Devilman.

[It’s a familiar dungeon.]
Inside a medium-boss room of an RPG game that he played again and again until he can get there with his eyes closed.

Waiting for a hero, a demon who exists only to be defeated, got his former life memory revived.

Knowing that, in his previous life, he was a nothing-special college student-

Continuing to stay as a to-be-defeated mid-boss is a no.

The determined him, decided to defeat the boss and escape the dungeon.

That which was obtained in the process was a doping item called “pearl piece”.(Jap:”珠片”) The demon, who was ordered by the goddess to collect the 15 pearl pieces that was scattered around the world, decided that after all this, he at least want to travel around the world of his favorite RPG game. This would one day become the legend of the Demon God of Oeyama, the demon romance story.

When the looming Cold War shrouded Japan, mysterious murders were reported there. The suspect was a man with a skull-like helmet and a cape and clothing as black as the inside of a grave.

Accompanied by a shape-shifting beast named Garo, the Skull Man terrified Japanese society—without giving the people a clear reason why.

In the panic surrounding a worldwide pandemic which kills 15 percent of the population and cripples many more, a secret organization, the Propater, topples the UN and seizes control of much of the world. A boy and a girl, raised in an abandoned virology research center, immune to the virus, are attacked by the Propater and escape.

Based strongly on Gnostic mythology, all major characters are named after gnostic deities, and have analogous roles.

Nana, an apathetic 24-year-old with nothing much in her life, suffers a car accident and wakes up in her 14-year-old junior high body. As she lives through each day, she starts to remember things she buried deep in her memory, and she can now not remember being involved with her older sister, whom she deeply admires, and her sister's first love, a senior at her school.

"Jesus. Teacher, healer, savior. The story of one of the most revered figures in human history is revisited in this full-length graphic novel, featuring breathtaking full-color art by Yoshikazu Yasuhiko, the creator of ""Joan."" This faithful adaptation of the New Testament text follows Jesus from his days at Calvary to the time of the Crucifixion and beyond. "

Because she killed herself, Sagiri became one who escorts souls of those who have died, instead of going to heaven. She met Hisagi while he was crossing the river of the world of the dead... They promised they would meet again and live happily in their next lives... Can their promise be fulfilled?