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These three anime:

  * _Knight's & Magic_
  * _In Another World With My Smartphone_
  * _KonoSuba: God's Blessing on this Wonderful World_.

and perhaps others anime as well begin with the common theme of a guy dying
and get born on another world. That made me wonder what made this theme be
present in so many anime.

I am specially focused on the **death** of the characters since that is, in my
opinion, a different element of other _isekai_ anime such as Sword art online.
In Sword art Online the characters are truly imprisoned in a different world.
In this three anime **the characters die and continue their lives (are
ressurected into) in a different world.**

Is this kind of story present in some Japanese book? Is it just because this
kind of narrative was well received? Are they anyhow related?

If possible it would be great if someone could find the first anime where this
narrative was present.


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2018-03-28T18:47:22.030
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tropes
What is the relevancy between the common theme of Knight’s & Magic, In Another World With My Smartphone, and KonoSuba?


Thanks to [paulnamida's
comment](https://anime.stackexchange.com/questions/46298/what-is-the-
relevancy-between-the-common-theme-of-knight-s-magic-in-
another-w?noredirect=1#comment60390_46298), this is a sub-genre of 異世界 (
_isekai_ , "different world") called **異世界転生 ( _isekai tensei_ , reincarnation
on different world)**.

[Nicopedia
(Japanese)](http://dic.nicovideo.jp/a/%E7%95%B0%E4%B8%96%E7%95%8C%E8%BB%A2%E7%94%9F)
has an exclusive entry for this genre.

* * *

According to them, the definition is

> 元の世界の住人が死んで異世界で生まれ変わり、新しく人生をやり直すというもの。
>
> Inhabitants of the original world die, reincarnated in a different world,
> and start a new life.

It has existed at least since 1988 in Japan with [_New Story of Aura Battler
Dunbine_](https://myanimelist.net/anime/5372/Seisenshi_Dunbine_OVA), a
3-episode OVA of _Aura Battler Dunbine_.

> 古くから存在するジャンルで、日本のアニメでも80年代後半で既に近い特徴を持った『New Story of Aura Battler
> DUNBINE』が登場している [...]
>
> In the genre that has existed for a long time, in the second half of the
> 1980s there was a Japanese anime _New Story of Aura Battler Dunbine_ which
> has similar characteristics [...].

The cause of death can be anything, but a prominent one is caused by a truck,
in which it's called "truck reincarnation".

>
> 転生なので異世界に行くには一度死ぬ必要があるが死因は様々で、トラックに轢かれて死ぬ、事件に巻き込まれて死ぬなど様々である。特にトラックに轢かれて転生する場合は「トラック転生」と呼ばれている。
>
> Since it's necessary to die once to have transported into another world
> because it's a reincarnation, there are many causes of death, like running
> over by a truck, getting into an accident, etc. Especially, for
> reincarnation after running over by a truck, it's called "truck
> reincarnation".

Some prominent works in this genre:

>   * アルバート家の令嬢は没落をご所望です ( _The Daughter of the Albert House Wishes for Ruin_
> )
>   * 異世界はスマートフォンとともに。 ( _In Another World With My Smartphone_ )
>   * 賢者の孫 ( _Kenja no Mago_ )
>   * 公爵令嬢の嗜み ( _Common Sense of a Duke’s Daughter_ )
>   * この素晴らしい世界に祝福を！ ( _KonoSuba_ )
>   * 転生したら剣でした ( _I Was a Sword When I Reincarnated_ )
>   * 転生したらスライムだった件 ( _That Time I Got Reincarnated as a Slime_ )
>   * ナイツ&マジック ( _Knight's & Magic_)
>   * 本好きの下剋上 〜司書になるためには手段を選んでいられません〜 ( _Ascendance of a Bookworm_ )
>   * 無職転生 ~異世界行ったら本気だす~ ( _Mushoku Tensei_ )
>   * 幼女戦記 ( _Saga of Tanya the Evil_ )
>

* * *

As for the reason why there are many works with this genre recently, [Kevin
fu's answer to a similar
question](https://anime.stackexchange.com/a/42797/2516) would also apply here:

> But the reason on why there's an influx of it being used is the fact that it
> currently sells when used in a light novel, manga, or anime title.


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