GuessAnime.

8. World Teacher: Isekaishiki Kyouiku Agent

A man who was once called the world strongest agent ended up becoming a teacher after his retirement to train the new generation of agents. After many years of training his disciples, he is killed at the age of 60 by the ploy of a secret organization and was reincarnated in another world with all his past memories.

Though he was surprised by the magic and the strange species of that world, he adapted very fast to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his tight discipline in order to reach his goal: resume his career as a teacher which he left halfway through in his previous life.

This is the story of a man who based on the memories and the experiences of his previous life, became a teacher who travels through the world with his new students.

World Teacher: Isekaishiki Kyouiku Agent is currently publishing . It is also Known as: ワールド・ティーチャー 異世界式教育エージェント, World Teacher: Other World Style Education & Agent

7. Zelda no Densetsu: Twilight Princess

Link, a shepherd from Ordon Village, sees village children, including with his childhood friend Ilia, being kidnapped by monsters. He chases after them only to find his world covered in twilight. Thereupon Link suddenly transforms into a wolf and finds a mysterious character named Midna. His journey to bring back light into the world begins.

The Legend of Zelda: Twilight Princess is finished and has 11 Volumes and 58 Chapters. It is also Known as: ゼルダの伝説 トワイライトプリンセス, Zelda no Densetsu: Twilight Princess

6. Arifureta Shokugyou de Sekai Saikyou

Seventeen-year-old Hajime Nagumo is your average, everyday otaku. However, his simple life of pulling all-nighters and sleeping in school is suddenly turned upside down when he, along with the rest of his class, is summoned to a fantasy world! They're treated like heroes and tasked with the duty of saving the human race from utter extinction. But what should have been any otaku's wet dream quickly turns into Hajime's nightmare. While the rest of his class are blessed with godlike powers, Hajime's job, Synergist, only has a single transmutation skill. Ridiculed and bullied by his classmates for being weak, he soon finds himself in despair. Will he be able to survive in this dangerous world of monsters and demons with only a glorified blacksmith's level of strength?

Arifureta: From Commonplace to World's Strongest is currently publishing . It is also Known as: ありふれた職業で世界最強, From Common Job Class to the Strongest in the World

5. Mushoku Tensei: Isekai Ittara Honki Dasu

Just when an unemployed thirty-four-year-old otaku reaches a dead end in life and decides that it's time to turn over a new leaf—he gets run over by a truck and dies! Shockingly, he finds himself reborn into an infant's body in a strange new world of swords and magic.

His new identity is Rudeus Grayrat, but he still retains the memories of his previous life. Follow Rudeus from infancy to adulthood, as he struggles to redeem himself in a wondrous yet dangerous world.

Mushoku Tensei: Jobless Reincarnation is finished and has 26 Volumes and 330 Chapters. It is also Known as: 無職転生 ～異世界行ったら本気だす～, Mushoku Tensei: Jobless Reincarnation

4. Solo Leveling

In a world where awakened beings called “Hunters” must battle deadly monsters to protect humanity, Sung Jinwoo, nicknamed “the weakest hunter of all mankind,” finds himself in a constant struggle for survival. One day, after a brutal encounter in an overpowered dungeon wipes out his party and threatens to end his life, a mysterious System chooses him as its sole player: Jinwoo has been granted the rare opportunity to level up his abilities, possibly beyond any known limits. Follow Jinwoo’s journey as he takes on ever-stronger enemies, both human and monster, to discover the secrets deep within the dungeons and the ultimate extent of his powers.

Note: Chapter count includes a prologue and 21 side stories.

Solo Leveling is finished and has null Volumes and 201 Chapters. It is also Known as: Boku dake Level Up na Ken, 俺だけレベルアップな件, Only I level up, I Level Up Alone, Поднятие уровня в одиночку, Na Honjaman Level-Up, Only I Level Up, Ore Dake Level Up na Ken, Поднятие уровня в одиночку, Тільки я візьму новий рівень, تکرو, 我独自升级

3. Tate no Yuusha no Nariagari

Naofumi Iwatani, an uncharismatic otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction.

As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!

The Rising of the Shield Hero is currently publishing . It is also Known as: 盾の勇者の成り上がり, Tate no Yuusha no Nariagari

2. Vinland Saga

As a child, Thorfinn sat at the feet of the great Leif Ericson and thrilled to wild tales of a land far to the west. But his youthful fantasies were shattered by a mercenary raid. Raised by the Vikings who murdered his father, Thorfinn became a terrifying warrior, forever seeking to kill the band's leader, Askeladd, and avenge his father. Sustaining Thorfinn through his ordeal are his pride in his family and his dreams of a fertile westward land, a land without war or slavery … the land Leif called Vinland.

Notes:

- Won the Grand Prize at the Japan Media Arts Festival in 2009.

- Winner of the 36th Kodansha Manga Award in the General category in 2012.

Vinland Saga is currently publishing . It is also Known as: ヴィンランド・サガ, Vinland Saga

1. Isekai wa Smartphone to Tomo ni.

Touya Mochizuki was accidentally killed, and as an apology, God allows him to be reborn in a fantasy world and will grant him any one wish he desires. And so, Touya chooses to keep his smartphone in the next world. In his second chance at life, he befriends many important figures and comes across the world's secret. He inherits the legacy of an ancient civilization and travels around nonchalantly while possessing powers that rival this world's kings.

In Another World With My Smartphone is currently publishing . It is also Known as: 異世界はスマートフォンとともに。, Isekai wa Smartphone to Tomo ni.