I'm not sure specifically as there could be many novels with this title or related to this phrase. It might be about a story where the protagonist is transported to another world ('isekai' means another world in Japanese), perhaps with adventures, magic, and new characters.
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The 'isekai kara kita yuusha novel' likely tells a story full of fantasy elements. The hero coming from another world is a common trope in isekai stories. He could be summoned there by some magic or accident. Once in this new world, he may have to adapt to different cultures, magic systems, and races. His experiences would form the core of the story, which might include battles against powerful foes, exploring unknown lands, and uncovering the secrets of this new world.
One common theme is friendship development. Since kita and bocchi are often characters in a story, their friendship might be explored in depth, showing how they get to know each other better over time.
Plato is an important figure as he was one of the first to mention Atlantis in his works. His descriptions have inspired countless other works of Atlantis fiction.
A very popular one is '20,000 Leagues Under the Sea' by Jules Verne. Although not solely about Atlantis, it has elements related to it. The story's underwater adventures give a sense of the mystery that could be associated with Atlantis. The vivid descriptions of the underwater world and the strange things found there can be related to what one might imagine Atlantis to be like.
There were many books about the Atlantean civilization in the west. The following were some of the main works:
The Lost Civilization by Paul Coelho
The Story of Athenian City by John Updike
3. The Secret of the American People by William gibson
4. The Treasure of Athenaeum by Paul Coelho
5. The Heart of Athenaeum by William gibson
These books mainly discussed the history, legends, myths, and mysticism of the Atlantean civilization. They described the geography, politics, society, and culture of Atlantis and explored the interaction between humans and the Atlantean civilization.
The Atlantis of Plato was mentioned in the Republic and the Symposium. In The Republic, Atlantis was described as a rich, civilized, and beautiful country, but its inhabitants were too proud and greedy, which eventually led to its sinking. In the Symposium, Atlantis was described as a place ruled by philosophers who made Atlantis prosperous through wisdom and art.
Atlantis was a legendary island in ancient Greek mythology. It was said to be located in the center of the Atlantic Ocean and had mysterious power and beautiful scenery. The following are some books related to Atlantis:
The Lost Civilization by Paul Graham. This was a science fiction novel about a future Earth where the ruins of Atlantis appeared and human explorers went to find the answer.
[2] The Legend of Adonis: William gibson. It was a fantasy novel about Atlantis, a world where magic and technology intertwined.
3.'Hyper' by Raymond Chandelier. This was a detective novel that told the story of Atlantis, which took place in America in the 1920s.
The Eye of Adonis: Stephen King This was a horror novel that told the story of Atlantis. The story took place in a world where monsters and horror intertwined.
Some information about Atlantis 'underwater ruins. According to Plato's records, Atlantis was an ancient city. Around 10,000 B.C., due to severe earthquakes and rising seawater, the continent of Atlantis collapsed and sank to the bottom of the sea. Explorers discovered three Atlantis ruins at the bottom of the ocean, located in the bottom of the Bahamas Islands, the Beirut Triangle, and the Atlantic Ocean. These ruins included ancient temples, roads, docks, buildings, and statues. In addition, some scientists found a metal in a shipwreck near Sicily Island. This metal was believed to be the precious red Orihalcon of Atlantis. However, there was no conclusive evidence to prove that Atlantis really existed at the bottom of the sea. Therefore, there was no clear answer to the question of Atlantis 'underwater ruins.