Isekai Anime with an incredible sense of scale

Key things

• One Piece features extensive world-building with a huge cast that influences the protagonist's fate.
• The Isekai genre lends itself well to high stakes and detailed settings, as shown in Knight's And Magic and Now And Then, Here And There.
• Mushoku Tensei and That Time I Got Reincarnated As A Slime demonstrate massive scale through world-changing conflicts and growth in power.

Some anime shows stand out from all others because of their sheer size. This has nothing to do with the number of episodes, but with how expansive the stories feel. One of the best examples is one piece which, in addition to a staggering number of episodes, offers a huge cast and an even bigger world where the fate of the protagonist affected everything.

There are shows that do this in almost every genre, and isekai is no exception. Isekai fits this premise because the very idea of ​​being in another world presents the potential for very high stakes in a vast and detailed environment.

7 Knight and magic

Isekai AND Mecha make a great combination

Knight and magic is a 2017 anime in which an otaku programmer who loves mechanical robots dies and is reincarnated in a new world where humans fight using magic-powered giant robots called Silhouette Knights.

Now known as Ernesti Echevarria and gifted with impressive magical powers, the protagonist strives to fulfill his ambition to be able to build mecha. The world of Fremmeville starts out small, but expands as the episodes go on as more kingdoms are introduced and the shadow of war looms over everything.

6 Now and then, here and there

A look into a dystopian world

Now and then, here and there is one of the older isekai series and came out before the genre became as popular as it is today. It tells the story of Shuu, who finds himself in another world trying to save a girl he just met, Lala-Ru.

The show uses Shuu to take the viewer into a world ravaged by war, suffering and deprivation. Viewers experience Shuu's torture, pain, and resilience with him, while also realizing the far-reaching consequences of his actions. The feeling of feeling small and powerless in a world that isn't fair to anyone is something Now and then, here and there it works beautifully.

5 Fate/Grand Order – Absolute Demonic Front: Babylonia

Anything involving the multiverse is huge

Some might object to the call Fate/Grand Order – Absolute Demonic Front: Babylonia isekai. However, it fulfills the genre criteria in the same way as Inuyasha does, a Inuyasha is considered an isekai in many circles. As a component Fate franchise, FGO it already has a sense of scale that spans multiple timelines.

The aim of the show is to immerse viewers in the world of Mesopotamia in 2655 BC, where Gilgamesh rules and tries to protect his city. Throw in some demonic beasts threatening the peace of Uruk and everyone gets an epic showcase.

4 Mushoku Tensei: Reincarnation Without Work

Rudeus is involved in conflicts that change the world

Mushoku Tensei is one of the most popular isekai currently on air, and part of its appeal is its huge sense of scale. Viewers have been watching Rudeus literally since the day he was born in the new world. While the early episodes Mushoku Tensei suggest a small story about an overwhelmed character growing up in a small town, they change rather abruptly.

Rudeus must leave home and then travel to different parts of the world with different races and powers. It gives Mushoku Tensei an amazing feeling to be a small part of a big story. The involvement of powerful entities like the Dragon God also adds to the scale of the story.

3 That time I was reincarnated as slime

Rimuru Tempest grows to become a world power

That time I was reincarnated as slime starts out simple: a mercenary ends up murdered and transported to another world where the slime is now. While unusually on the surface, That time I was reincarnated as slime it slowly builds to an incredible climax.

Rimuru Tempest (the name assumed by the slime) slowly begins to build her own company. He soon comes into conflict with other empires and societies. Political intrigue, drama, and intrigue unfold over time, engrossing the viewer as they see this vast world that Rimuru inhabits come to life.

2 Tsukimichi: Moonlit Fantasy

Makoto's Lone Adventure is getting a great expansion

Tsukimichi is also an isekai with some common tropes that everyone is used to by now. The protagonist is transported to another world, imbued with unnecessary power, but somehow manages to overcome it, and all the ladies fall for him.

However, Makoto is a much more likable protagonist than most. As he begins to build an empire where outcasts like himself can dwell in peace, season two arrives and raises the stakes. It features other heroes from Makoto's world and other empires, kingdoms, and races, all slowly coming to terms with the growing influence of Makoto and his empire.

1 12 kingdoms

Youko's Rise From Normie to Queen is epic

12 kingdoms uses its simple isekai premise to create an intricately detailed world. When Youko Nakajima is banished from her everyday life to become the queen of a kingdom in another world, she feels out of her element.

Youko's journey to becoming queen is not an easy one, and she soon becomes embroiled in a conflict involving the most powerful forces in the land she is meant to rule, with a bit of intrigue from the other kingdoms. However, the story doesn't focus entirely on Youko. Viewers will see the world through the eyes of other individuals, some in completely different realms located in the same world. This leads to creating a great sense of scale for the series. The series is fondly remembered as one of the best-constructed isekai shows of the generation.