This kind of situation often appeared in novels and was usually called anime transmigration or anime flow. In this kind of novel, the anime characters would transmigrate to another anime world or manga to become the main characters or important characters of this world.
There were many forms of anime novels. Some novels would tell the origin story of the anime characters, while others would directly shape the anime characters into the main characters to engage in intense conflicts and stories with other characters.
Comic novels usually involved the transformation of the background, personality, skills, and other aspects of the characters. At the same time, they also needed to take into account the plot settings, character relationships, worldviews, and other aspects of the different anime worlds. This kind of novel often attracted the attention of many anime fans and novel readers.
The situation of anime characters transmigrating to another anime did not exist in real life, but it might happen in some novels and comics. For example, in some novels or comics, the protagonist might travel to another world in some way and become another character there. This situation was usually used to enhance the storyline of a novel or manga and to provide more background and experience for the characters. However, this plot was not a real situation in the real world. It was just a fictional plot.
Yes, there was a light novel called "Transformation in Comics". The plot involved multiple anime characters transmigrating to different anime worlds, guessing each other's identities and fighting each other. Among them, after the protagonist becomes a contestant, he will temporarily possess his original character and gradually grow in the process of fighting with other original character contestants. QQ group: 205348303. I hope you like this fairy's recommendation. Muah ~😗
I'm not sure which anime you're referring to. However, there were some anime works that contained the plot of transmigration to other anime works, such as "The Gate of the Fate Stone","The Catalog of Forbidden Magic Books","Even a chuunibyou disease has to fall in love!" The Attacking Giant, etc. If you can provide more information, I will be very happy to provide you with a more accurate answer.
There are many anime works that transmigrate to another world. The following are some examples:
1.<< Index of Forbidden Magic Books >>: The main character, Dang Ma, became a mage after crossing over to another world.
2." Tokyo Ghoul ": The protagonist Kim Mu-yan accidentally transmigrated to another world and became a ghoul.
[3. The Blade of Ghost Destruction: The protagonist, Tanjiro, is an ordinary office worker who accidentally transmigrated to another world and became a Ghost Hunter.]
4." Sword God Realm ": The protagonist, Kirito, was a gamer who traveled to another world in a game and became an adventurer.
5." About Me Reincarnating into a Slime ": The protagonist reincarnates into a slime and begins his adventure in the Otherworld.
These are just some of the works. In fact, there are many other works that you can choose according to your preferences.
The more common types of anime where siblings transmigrated to another world were fantasy or science fiction. In such novels, there would usually be a pair of siblings who, for some reason, traveled to another world and experienced various adventures and challenges in that world. They might encounter all kinds of magical creatures and magic, as well as all kinds of powerful enemies, but they would definitely be able to overcome all kinds of difficulties and become the strongest in the other world. This type of novel often had exciting plots and exciting battle scenes that were deeply loved by readers.
There were many cartoons about traveling to other worlds, some of which included:
1 Sword God Domain: It tells the story of a game player who transmigrated to another world to fight and adventure with other players.
2.<< Index of Forbidden Magic Books >>: It tells the story of the protagonist, Tama Shangjo, who traveled to another world to fight and adventure with various superpowers.
[3]" The Attacking Giant ": It tells the story of the protagonist, Alan, who has traveled to another world to fight and survive with other humans and giants.
4.<< Re-Life in a foreign world from scratch >>: It tells the story of a programmer who transmigrated to a foreign world to fight and grow with various monsters and characters.
5. The Ghost Blade: It tells the story of the protagonist, Tanjiro, who traveled to another world to fight and grow up with various demons and ghosts.
Grave of the Fireflies. Set during World War II, it tells the story of two siblings, Seita and Setsuko. They struggle to survive on their own after their mother is killed in an air raid. Eventually, Setsuko dies of malnutrition, and Seita is left alone and later also perishes. It's a heart - wrenching tale of the horrors of war and the vulnerability of children.
Light novels. They are often associated with anime and share many characteristics such as having colorful illustrations, a focus on youth - oriented themes, and are sometimes adapted into anime series.