There are people in the world that thinks they are the ‘chosen’ of the heavens.
It’s been decades since chaos and strife among heroes ensued because of those people.
A certain disciple who has six masters has been entrusted with the fate of the central plains.
“If you guys are the heavens, then I’m the sword that’ll pierce the heavens.”
That was what he’d resolved to do… No one mentioned he was a fatty, though!
In any case, now that he’s here, he’ll need to save the… world… Damn it, lose some weight first.

The protagonist, subjected to school violence, falls from the rooftop. After barely waking up from six months of unconsciousness, he refuses the help of his old childhood friend and chooses to transfer. He, who started martial arts by chance, is already growing enough to be ahead of the championship final and wants to show her changed appearance, but he hears the news that she was murdered by the bullies the day after he transferred. After reaching the finals in shock, he surprisingly takes a time warp on the first day of unconsciousness and tries to save her by getting a 30-day opportunity.

From: Easy Going Scans

High-schooler Nishino Aoi is a history nut who's in the archery class at his school. Due to his skill in archery, he sometimes thinks that he's more suited to the Sengoku period of Japan. If he lived then, he imagines he might even have a girl like his clubmate Seno-san as his wife. As it is, Seno-san is his friend and the girlfriend of his childhood friend Kouta.

When a mysterious fog covers the school, Aoi gets his chance to experience the Sengoku period first hand. The entire school is transported to a time period that Aoi pinpoints as somewhere between 1576-1582, near to Azuchi Castle. However, things are not as bright as he might have imagined. Armed men accompanying the historical figure Hachisuka Koroku attack the school, brutally murdering teachers and students. Will Aoi and his friends be able to survive this deadly era? [tethysdust]

Haruto, who lived as an ordinary boy,
At some point, a goddess bestowed upon him the "Absolute No Damage Skill".
Haruto was still half suspicious, at that moment when he was still visiting a village,
after meeting the two sister adventurers Lilith and Alice, their path began to change dramatically.
Whether people or demons, he'll mow down his enemy as an adventurer ---!!

By being dumped into garbage dump, the past records of the robot- Debris Kun (memory) has disappeared into stardust (stardust).
Due to a chance encounter, the pretty high school girl Nina picked him up stating she would not be a robot master but a teacher.
They lived together.
This world is full of wonders: giant snakehead fishes fall from space, toy monkeys start conversations, a ¥ 300 million lottery hit is won, and special motors make islands fly!

"After one year, five years later, 10 years later...and 50 years later..."
Every time you go through one volume, time is progressing very quickly in this work.
Robot does not grow old, but human beings do.
The girls grow into adult women, the surrounding environment also evolves into a more SF view of the world.
Human beings are dying, but the stardust memory of the robot does not die.
This manga might give to readers the feeling of being watched in the transience of the world,
likely from God's point of view.
And so the story, in God's speed, proceeds to the future.

"Boys and Girls", following "Mobile Brigade eight Fukujin",
Satoshi Fukushima's new "time skip comedy" series is "Stardust Nina"!

[MU+GoogleTranslate]

From Evil Flowers:

During their senior trip on the cruise ship Victoria, a group of friends is suddenly pulled back in time and separated. The main character, Hayumi Natsuki, arrives in the year 1636. In Japanese history, Christian rebels, led by a young man known as Amakusa Shirou, revolted in 1637, which resulted in thousands of casualties.

However, when Natsuki arrives in the past, she and her friend Eri discover that Shirou Tokisada is already dead. Meanwhile, Natsuki, according to the villagers and Shirou’s parents, looks exactly like their late son (disregarding the fact that Natsuki is female).

Natsuki, the kendo champion of her school and heir to her family’s Hakuhouryuu kendo style, simply cannot stand by and watch innocent people be persecuted simply for being Christian. Soon she even becomes known as an angel, sent from God, whose arrival was prophesied 25 years earlier. But what will she do when old friends become new enemies?

From Transcendence
Azusa, a normal high school girl, fell down the stairs while visiting her grandmother in the hospital two months ago. When she awoke, she was surrounded by people speaking of "The Priestess of the Dragon God," "The Imperial Capital," and "The Taisho (Era)."
The legend starts again with this work, commemorating the 15th anniversary of the Haruka series!

Catriona Julie Grande, a marquis' daughter, was the Crown Prince’s fiancee. She was executed under false charges but went back in time. All she wanted was to live her life peacefully and prevent the same tragic fate from occurring again. But one day, the Prince appears in her life again and everything begins to fall apart. She has no idea what to do.

Thirteen years ago, an unidentified wall of light suddenly appeared around Sumihama. In order to return to his hometown, which had been cut off from the outside world since that day, Gataka Oro (24 years old) crossed the wall. At that moment, he was engulfed by a blinding light, and when he woke up, he found himself in the body of a child. Furthermore, his estranged childhood friend, Hime, appears before him just as she was back then. His body and her appearance, a nostalgic scenery, familiar places... Is this the world thirteen years ago?

“Could you become my daughter?”

Thanks to the Grand Duke Friedrich’s proposition, Elena became his fake daughter. Yet after marrying the Crown Prince, having his child, and acquiring land to oversee herself, the 'late' Duke's daughter, Lady Veronica, appeared before her.

All along, she had been nothing but a mere puppet for the real thing. Elena's son is thus taken from her, and she is murdered.

In a twist of events however, she ends up returning to the past.

"I will crush each and every one of you."

I will never live the life of a puppet again.

And so begins Elena's second life, swearing vengeance on her enemies.

Chen BeiMing was once a young and talented hunter of the Heavenly Alliance, until he got betrayed and murdered by The Five Lords. He gets resurrected into the past while having his memory intact and swears that he will get revenge on those who betrayed him. With the help of his battle sprite, he once ascends the road to become the strongest again...

The husband was in love with her cousin and the family was taken away by cigar. The moment I fell into despair and to end my life; the memory of my past life came to my mind.

The life of a white-haired worker in Seoul, returning to the past, she decided. “I will not be abandoned by them again. Now I will forsake them!”

Ian stare full gazed at Iris’ eyes, “Do you remember what I said the other day? Are you asking for a different fee?”

“Yes. I want to get it now.” Iris, was a woman who had nothing. “I did not have a strong parent like other noble princess, nor did I have much money.”

“What do you mean by yourself?” Iris blinked. He laughed and said. “Let’s have a relationship with me.” The eldest son of the line, the best of the empire, the best dancer Valencia is the perfect husband. The rope for the revenge makes me crave for more.

The ideal husband; a romantic wedding day; a perfect honeymoon... Everything looks as if it's going in the right direction, but instead I'm suddenly living a fantasy?!! Hahahaha, what the hell's going on?!

Every time I fail a quest, I'm thrown right back to the beginning of the mission! Where exactly is this heading!?

To protect my husband, Yeoyun, and stop travelling back in time, I must control this marriage and the in-laws!

When the Demon Tribes led by a Demon King appeared and launched a massive war at mankind, all hope seems to be lost, until a brave group of heroes managed to turn the tide and even defeated the Demon King.

John Serieux, a mid-ranked soldier of World's Resistance against the demon's army, had fortunately been able to witness the Demon King's fall by the Heroes, but also was unfortunately killed a moment after. Miraculously, he was still able to open his eyes, only to realize that his mind had been sent back to the past when he's still a baby!

With all the memories of his adult years, the knowledge of many scientific breakthroughs during the war, and information of the upcoming great disaster all intact, John is determined to cultivate his potential efficiently and optimally to help change the future for the best.

Junho Kim, he loved pro-wrestling more than anyone but he couldn’t escape the racial standards.

After his meaningless retirement, while working as a construction worker, he got caught up in an unexpected accident…

And after he opened his eyes, he returned to the day before his WWF entrance exam!

“This time, I won’t end as the villain ‘king-fury’ with a 0.7% success rate!”

He returned to his 20s body with all the knowledge he’s worked so hard for and information about the future.

He will not repeat his history of being ‘jobber’, the expert at losing.

He will rewrite the history of pro wrestling together with the wrestler that will take over the era in the future!

To ultimately become the god of pro wrestling, an ‘icon’ of the era!

On a school trip to shinobi-themed Ninjatown, a young man named Ichi Kuno accidentally springs a mystical ninja trap which sends him back to the Age of the Ninja. Having no other path, he must pose as a girl and infiltrate Kurenai Academy, a school of kunoichi students, to retrieve a mystical scroll that can return him to the future. But when everyone around him is already far better at stealth and infiltration than he could ever imagine being, it's not going to be easy. He'll need to employ his own special bag of tricks, and have a lot of luck, if he's going to last more than 5 minutes surrounded by hot kunoichi girls, every one of whom would happily kill him in a moment if he's discovered.

Korea's first ever webnovel of the 'another world' genre, Memorize. The legend has returned in webtoon form!] Hall Plain, a different world from Earth. After being discharged from military service, Kim Su Hyun is suddenly abducted to the world of Hall Plain. After many twists and turns, he manages to reach the peak of the Hall Plain. However, all the anguish he had experienced during his 10 years in the Hall Plain left him in despair. To change his bitter past, Kim Su Hyun decides to use the Zero Code's power to turn back time 10 years. "It is absurd to use an object with such incredible power to simply turn back time. I will ask for the final time. Player Kim Su Hyun, do you truly wish to repeat those ten years of torment?" Seraph looked at me like she was pleading. I couldn't help but laugh for no particular reason. For no particular reason indeed.

Hari, a destitute girl, got adopted by Duke Ernst at 7 years old when she lost her mother, as the Ernsts had themselves lost their youngest daughter Arina and sought Hari due to her resemblance to the late girl. Even though she received all kinds of persecution by the three Ernst sons in 20 years of life at the Ernst estate, she could finally escape that blood-and-tear inducing life when she was about to get married.

But what is this?
When I woke up from my sleep, I'm back to that hellish childhood! Is this a dream?!

Hmph. If I can't wake up from this dream,  I'll at least live without too much consideration for others now!

Just like that, Hari decided to go astray. Eugene, the "dutiful son" but cold, Cabel, the roughhousing knucklehead, and Erich, the angelic-looking bully and Arina's twin, all three be damned!

He can’t even kill a person, but he’s a villain? What kind of Villain is that? Kim Dong Jin, a high school student who calls himself a villain and explores the dark side. And this villain’s fatal weakness is…

Zeff Einstein spent his whole life mastering red magic and was finally recognized for it, yet a new spell that was soon created revealed that his talent for red magic was his lowest. Bitter at the thought of all his wasted effort, he creates a spell to send his old self back in time to his younger body and together with the determined "genius" mage Milly and the handsome swordswoman Claude, he intends to master magic more efficiently this time.