In some 'harry gets summoned to another world fanfiction', a cool plot is that Harry gets summoned to a world where magic is scarce. He has to figure out how to use his existing magic knowledge to help the people there discover or regain their magical abilities. Or perhaps he's summoned to a world where there are mythical creatures he's never seen before, like giant talking birds or shape - shifting foxes, and he has to form alliances with them to survive.
Hermione might be a common character. Since she's Harry's friend and very intelligent, she could be summoned along with Harry or find a way to follow him. Dumbledore could also make an appearance in some stories. He's very powerful and wise, so he might show up to guide Harry in the new world. Ron could be another one. His loyalty to Harry might lead him to try to rescue Harry from the other world.
Well, he might use his ninja skills to become a hero in that world. He could teach the locals about chakra and how to fight like a shinobi. Maybe he'd make new friends and form a team to face the challenges there.
His character could become more adaptable. Having to deal with a whole new world, he'd learn to be flexible. He might also become more empathetic as he meets different kinds of people with different problems.
Yes, the main characters of novels like "Beast God of the Mystic World","I became the fiercest Summoned Beast","I'm actually a Summoned Beast","I became a Summoned Beast", and so on were all summoned into Summoned Beasts, mutated beasts, or other strange forms to the Otherworld.
One interesting 'harry gets summoned fanfiction' could be where he is summoned to an alternate magical realm. In this realm, he has to face new challenges and enemies that are different from what he encounters in the original Harry Potter world. For example, he might have to deal with a powerful dark wizard who has unique and strange magic.
He might encounter different versions of his friends and enemies. For example, a more evil Voldemort or a kinder Snape. He could also discover new magical abilities or objects that don't exist in his original universe.
It was rare for modern humans to be summoned to another world, but there were some novels or comics that had such plots.
Generally speaking, modern humans were usually summoned to the other world for some reason, such as some mysterious power, some unknown virus, and so on. These forces or viruses would summon modern humans to the Otherworld to face various challenges and dangers with them.
In this type of novel, there would usually be a variety of magical creatures and worlds such as magic, elves, orcs, and so on. Modern humans needed to rely on their own abilities and wisdom to survive and develop in the Otherworld.
Modern humans who were summoned to the foreign world may face various challenges and dangers, but they may also make various friends and enemies. They needed to constantly adapt to the new environment and culture to grow and improve. This kind of plot would usually give the readers a strong sense of immersion and feel the survival and adventure of modern humans in the other world.
The novels that were summoned to another world generally had fantasy elements. The protagonist usually experienced various adventures and fought various enemies, gradually growing into a powerful existence. Some of the novels would also tell the stories of the companions and friends the protagonist met in the other world to make the story more colorful. The novels that were summoned to another world often involved concepts such as magic, elements, and fantasy creatures.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions, and you can use the search function to specifically look for 'harry gets summoned' stories. There are likely to be many different takes on this concept there.