There are two more common types of anime with rebirth settings:
One is to cross the standard routine. That is, the protagonist originally lived in the real world, and was reborn in another world with an accident as an opportunity;
The other is that the background of the story takes place in an alternate world, and the protagonist needs to be forced to die for various reasons and be reborn into the future.
There are many examples of the former, and most of the crossings we know use this setting. As for the latter, such as "The Unsuitable one of the Demon King Academy" that aired last year, and the "Magic Sword Messenger of the Sacred Sword Academy", which was just announced to be animated some time ago.

The Magic Sword Messenger of the Sacred Sword Academy is a light novel created by Shi Ruiyu and serialized in 2019. Like another of Shizumi's works, The Sword Dance of the Elves, the game is also set in a magical school in another world, and the overall style is biased towards the harem Shuangwen direction.
The adaptation of the manga related to "The Magic Sword Messenger of the Sacred Sword Academy" is the responsibility of The Fluorescent Bird. Compared with the routine plot setting of the original novel, the comic has more points to watch. The painting style itself is quite good, and the characters of several heroines are also very cute.
In terms of worldview, the story takes place in a world where elves, humans, gods, and demons coexist. The male protagonist, Leonis, is the leader of the Demon Clan, the Demon King. At the beginning of the comic, the male protagonist is in trouble.
Due to the joint siege of the six brave warriors and humans, the Demon King's army was gradually defeated, and only the last stronghold remained. Up to now, the male protagonist as a leader can only be forced to fight.
But before that, his little follower came forward to block him because he was worried about his safety, and suggested that the male protagonist endure a moment of calm and calm, and it was not too late for the gentleman to take revenge for ten years.
In this way, for the future of the Demon Clan, but also in order to one day be able to take revenge on the other party, the male protagonist chose to seal his soul and enter a deep sleep state to wait for the rebirth after 1000 years.
However, things did not go as smoothly as he thought.
On the one hand, just as they were about to be resurrected, two young girls suddenly broke into this place. They are also the two heroines of the game: Licellia and Regina.
Both were students at the School of Magic and had come here to check for anomalies. As a result, he accidentally found the demon king who had been sealed.
On the other hand, I thought that after the resurrection, I should also be the majestic and full appearance of the past, but I did not expect that I did not know what went wrong in the casting process, and I became the appearance of a 10-year-old child.
It is precisely for this reason that when I first met the heroine, I was also hugged by the other party as a lost child.
After this, under the leadership of the two, the male protagonists left here and came to the place where they lived called the "Seventh Tactical City". And under the explanation of the other party, it is finally roughly clear about the characteristics of this era.
After nearly a thousand years of development, today's era has long been completely different from before, not to mention the high-rise buildings, and there are also motorcycles and other tools. And, since then, unknown enemies have emerged around the world- void. As for the main weapon against them, it is the Holy Sword.
The two female protagonists also attended a school called the Sacred Sword Academy in the city.
On the other hand, the male protagonist, with the support of the two female protagonists, finally successfully joined the Sacred Sword Academy, and with the ability of the previous demon king, he and the beautiful girls around him began a different fantasy campus story.
The news of the animation of the Sword Academy's Magic Sword Messenger was announced in October of this year. As of now, apart from promotional paintings and pilot PVs, no specific production and voice actor lineup has been made public.
However, the CV lineup of the sound manga of the game is still quite luxurious, the male protagonist is voiced by Tamura Mushin, and the two female protagonists are Higashiyama Nayo and Ohnishi Saori.
As far as the actual perception is concerned, the image characteristics of these characters and the voice line of the voice actor are still very compatible.
Tamura Mushin is already very good at this kind of juvenile male protagonist image; Higashiyama Nayo and Ohnishi Saori, as regular guests in the harem love affair, have nothing to worry about about the understanding of such heroines.
If TV animation can copy the current dubbing lineup, I believe that many fans will look forward to it.
Overall, "The Magic Sword Messenger of the Sacred Sword Academy" is a fantasy otherworldly theme, harem type work. The plot setting is not much new, and can basically be seen as a sister version of "The Sword Dance of the Elves". In contrast, the character of this work is still very bright.
If you have a favorite friend, it is not recommended to make up for the original novel, you can wait for the animation to be broadcast, or go directly to the manga.