Maybe for the sake of an interesting crossover. Writers often bring different characters from various universes together to create unique and exciting stories.
One great fanfiction could be 'The Summoning of Sebastian by Harry Potter'. In this story, Harry might summon Sebastian for a special mission. Maybe it's to solve a mystery in Hogwarts that only Sebastian's unique skills can help with. It could involve a lot of magical elements like complex spells and ancient artifacts.
In some fanfictions, when Harry is summoned for the Triwizard, he might face new and unexpected challenges. For example, there could be a twist in the tasks that are not in the original story. Maybe the magical creatures in the tasks are more dangerous or have different abilities.
There's also 'Summoned to a New Destiny'. In this fanfic, Fem Harry is summoned by a powerful magical force. It delves deep into her character development as she tries to adapt to the new situation. The author does a great job of portraying her struggles and growth. It's really a must - read for fans of this genre.
Often, heroes from other well - known fantasy worlds are summoned. For example, characters like Aragorn from 'The Lord of the Rings' might be summoned. His skills as a warrior and leader could be very useful in the Harry Potter universe. Another common summoned hero could be Conan the Barbarian. His brute strength and survival instincts would make for an interesting addition to the story. Sometimes, heroes from modern superhero stories are also summoned, like Batman or Superman. Their unique abilities and moral codes would create a lot of interesting scenarios in the wizarding world.
There is also a possibility that it's an unknown powerful wizard from a far - off land. This wizard has heard of their reputations and summons them to learn from them or to ask for their assistance in a matter that is crucial to his own land's magical stability.
They might be summoned by a powerful magical creature. This creature could be in need of their help to solve a problem in the magical world. It could be a dragon that has lost its way or a unicorn that is being hunted by dark forces, and they are the only ones who can save the situation.
Another way the 'Harry Potter is summoned' concept works is when a magical being with great power summons him. This could be a powerful wizard from another land or a magical creature like a phoenix or a centaur. They might summon Harry because they sense his unique magic or because they believe he has the ability to solve a problem that they can't. For example, a centaur might summon Harry to help deal with a dark magic that is corrupting the forest it guards.
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.
When Harry is summoned by Naruto fanfiction, it's likely that he would be a fish out of water. He would encounter characters like Naruto, Sasuke, and Sakura. His magic skills could be seen as a new form of power in that world. He might get involved in the battles between the ninja villages, using his own unique abilities to help or cause chaos, depending on how the story is written.