"Doraemon" is a series about a robotic cat named Doraemon, who travels back in time from the 22nd century to help a schoolboy named Nobita Nobi. Aside from the normal manga books, their great adventures to different places are specially described in Doraemon Long Stories books.

1. Volume 1: Nobita's Dinosaur
Nobita found a huge stone which he sure was a dinosaur egg. It seemed highly unlikely, but it did turn out as a dinosaur egg. That's when he and his friends go back to the past to the dinosaurs era.

2. Volume 2: Nobita's Record Of Spaceblazer
Nobita no Uchuu Kaitakushi
Nobita and friends tried to find a whole new planet because they can no longer play on the baseball field. They did find a new planet somehow, and big surprise: they become super humans with super power in that planet!

3. Volume 3: Nobita & The Haunts Of Ghost
Nobita and the gang were Itching for an adventurous expedition. A seemingly stray dog came to them and guide them to one.

4. Volume 4: Nobita's Monstrous Underwater Castle
What if you can live and breathe in water? An under-the-sea adventure!

5. Volume 5: Nobita's Great Adventure Into The Underworld
Nobita thought a world with magic would simplify everything, including housework. When he finally got his wish granted, magic not only come with fun stuff but also some demons and evils as well.

6. Volume 6: Nobita's Little Star Wars
Adventure involving mini-sized aliens.

7. Volume 7: Nobita & The Steel Troops
Robots overthrown human's civilization! Not if Doraemon and friends can help it.

8. Volume 8: Nobita & The Knights of Dinosaurs
Nobita wanted to find a place to hide his 0 mark test papers and they found a hole that is far bigger than what they can ever imagine.

9. Volume 9: Nobita's Birth Of Japan
They all return to the past where human wasn't yet exist and start setting up a home/ play ground. Little did they know there was already civilization in that era. That, plus a wicked mage.

10. Volume 10: Nobita & The Animal Planet
A planet whose inhabitants are animal-human gets connected somehow to Nobita's house. Where do they come from and who does Giant and Suneo meet when they go there?

11. Volume 11: Nobita's Dorabian Nights
The Arabian Night. Is it just a story, or is there any similarity with an actual time frame? Nobita and Doraemon explores with the rest eventually caught in the process.

12. Volume 12: Nobita & The Kingdom Of Clouds
Does heaven exist? Nobita was laughed at when he stated it does exist. So Doraemon created a kingdom on the clouds, invisible from outside; only for them to eventually find others that already existed.

13. Volume 13: Nobita & Tin-Plate Labyrinth
A holiday at a place where everything is made by nothing but tins brought them to another adventure with tin robots.

14. Volume 14: Nobita & The Fantastic 3 Musketeers
Nobita wants a good dream where he becomes a hero who will save a kingdom from evil and gets married to the princess as a reward. But how real is the dream world?

15. Volume 15: Nobita's Genesis Diary
Nobita's summer holiday project brought him to a world of insects.

16. Volume 16: Nobita & Galactic Express
A ticket to a train that travels between galaxies becomes a ticket to adventure against aliens.

17. Volume 17: Nobita's Adventure In Clockwork City

18. Volume 18: Nobita’s South Sea Great Adventure

19. Volume 19: Nobita’s Drifts In The Universe

20. Volume 20: Nobita’s Legend Of The Sun King

21. Volume 21: Nobita & The Winged Braves

22. Volume 22: Nobita & The Robot Kingdom

23. Volume 23: Nobita & The Wind Wizard

24. Volume 24: Nobita’s Wannyan Space Time Odyssey
Eiga Doraemon: Nobita no Wannyan Jikuudenden

Fear runs rampant throughout Tokyo with the revelation that demons in fact exist amongst us. Paranoia and the darker side of humanity boils onto the streets as people turn on one another, suspecting that anyone could in fact be a demon hiding in human clothing. Amidst the growing tensions, tragedy strikes Akira causing his mind to snap, retreating into his subconscious, allowing his Devilish alter-ego Amon to break free from Akira's cage of flesh and wreak havoc on both human and demons alike.

Ryo and Akira travel through time in order to eradicate demons that could have changed history. Various periods are visited: from pre-WWII to ancient Greece, middle ages in France meeting Joan of Arc, far-west America, renaissance.

It is the year 1999. In Nagano Matsushiro stands the pyramid of Japan, the private Voltstein Academy.

This place is famous for repeated occurrences of occult phenomena within its premises. Hence, it is also called the Occult Academy. The dean is committed to studying the occult, while the students are zealous in their everyday schoolwork.

One day, the dean passes away and his occult-hating daughter, Kumashiro Maya, visits the academy. There, she meets a self-proclaimed spoon-bending "time agent" from the year 2012, Uchida Fumiaki. As the two encounter various bizarre phenomena within the academy, the reason for Fumiaki's timeslip to 1999 becomes clear.

Houjou Hinaki is a young girl who has in her possesion a ring, a gift from her father. Anyway, this ring is not an usual one. When she kisses it, a young noble man named Sae appears in front of her and grants all her wishes. However, Sae is trapped in the ring and can't tolerate much time outside and together with Hinaki and her freaky schoolmate Yume-senpai, tries to find out a way of how he can escape from the ring's prison.

Kagome is a modern Japanese high-school girl. Never the type to believe in myths and legends, her world view dramatically changes when, one day, she's pulled out of her own time and into another! There, in Japan's ancient past, Kagome discovers more than a few of those dusty old legends are true, and that her destiny is linked to one legendary creature in particular--the dog-like half-demon called Inuyasha! That same trick of fate also ties them both to the Shikon Jewel, or "Jewel of Four Souls." But demons beware...the smallest shard of the Shikon Jewel can give the user unimaginable power.

Won the 47th Shogakukan Manga Award in the Shounen category.

Following the Tuatha de Danaan's seajacking incident, things are back to normal at Jindai High School in Tokyo, or as normal as they get with Sousuke guarding Kaname. After finding out who betrayed Mithril and caused the seajacking incident, Kurz and Mao are sent on a top secret mission in order to capture and bring the traitor back.

However, Sousuke and Kaname's lives are about to change when they meet Leonard Testarossa, a high ranking member of a mysterious group named Amalgam. After their meeting, Leonard warns her that he would do anything to recruit her even if it means war in the streets of Tokyo.

From Yen Press:
The air of celebration surrounding fifteen-year-old Oz Vessalius’s coming-of-age ceremony quickly turns to horror when he is condemned for a sin about which he knows nothing. He is thrown into an eternal prison known as the Abyss, from which there is no escape. There, he meets a young girl named Alice, who is not what she seems. Now that the relentless cogs of fate have begun to turn, will they lead only to crushing despair for Oz, or is there some shred of hope for him to grasp on to?

Dragon Ball follows the adventures of Goku from his childhood through adulthood as he trains in martial arts and explores the world in search of the seven mystical orbs known as the Dragon Balls, which can summon a wish-granting dragon when gathered. Along his journey, Goku makes several friends and battles a wide variety of villains, many of whom also seek the Dragon Balls for their own desires. Along the way becoming the strongest warrior in the universe.

Three students battle sadistic professors, annoying roommates and evil conspiracies at a second-rate university for superheroes. A French comic with heavy stylistic influences from American comics and Japanese manga, and tons of pop culture references.

From Anime News Network:
The story begins in the distant future in the far reaches of the galaxy. The Human Galactic Alliance has been constantly fighting for its survival against a grotesque race of beings called "Hidiaazu." During an intense battle, the young lieutenant Ledo and his humanoid mobile weapon Chamber are swallowed up into a distortion of time and space.
Waking from his artificially induced hibernation, Ledo realizes that he has arrived on Earth, the planet on the lost frontier. On this planet that was completely flooded by the seas, people live in fleets of giant ships, salvaging relics from the seas' depths in order to survive. Ledo arrives on one of the fleets called Gargantia. With no knowledge of the planet's history or culture, he is forced to live alongside Amy, a 15-year-old girl who serves as a messenger aboard the Gargantia fleet. To Ledo, who has lived a life where he knows nothing but fighting, these days of peace continue to surprise him.

A shounen story where 2 teenagers went back in time to the "Three Kingdoms" period of China. An entertaining action series with some light moment & a bit of romance. You also get to learn a bit about that era.

From JanKenPon:
Middle schoolers, Shiro and Masumi, encountered a mysterious dragon that brought them back to the time of the Three Kingdoms; situated in ancient China. As soon as they arrived, they were rescued by the Han Kingdom. Not long after these events, Masumi was kidnapped and Shiro barely escaped death... Soon the story gets more complicated as they are stuck in the past.

In 1997, Ryuurouden won the Kodansha Manga Award for shōnen manga.

Rinosuke's useless and vagrant father is now dead. Now, at the age of 16, he is completely alone and will have to quit school to make ends meet. On the night his father dies, a naked woman with large breasts falls from the sky and lands on top of him. She introduces herself as Sakamoto Marina, the future wife of the future Rinosuke. She states that she used a time machine to come back to the past, and start a new life with the younger Rinosuke. Rinosuke's new life with his future(?) wife begins.

At age 33, I am a loser, jobless and virgin, who only has remorse and pity for myself. Called by Anna, my secret crush in my childhood, and her fiance, I come to face the reality. But after I fall from the roof (caught wearing a grade school girl's swimsuit) I find myself to be back in the past. Now I will get my life back.

From: Easy Going Scans
As a result of a strange encounter with a mysterious carcinogenic fetus he found inside a patient’s skull, brain surgeon MINAKATA Jin has slipped back through time. Equipped with modern medical knowledge, he faces various fatal diseases and injuries. Then, he meets the ordinary people of Edo as well as illustrious figures, and his surgical knife carves out a new history and story of life.

Note: Won the Grand Prize at Tezuka Osamu Cultural Prize in 2011.

Released in English by the Artist on his Patreon:
https://www.patreon.com/motokamurakami

Feeling rebellious toward his overprotective and neurotic mother, 16-year-old Souma Mitsuya cares only about his violin and his hospitalized grandfather. On the night his grandfather's condition suddenly worsens, an earthquake hits, and Mitsuya finds himself lost and alone in Japan of the year 1921.

Struggling manga author Satoru Fujinuma is beset by his fear to express himself. However, he has a supernatural talent of "noticing things" that forces him to help people.

Boku dake ga Inai Machi Gaiden