Well, if Harry Potter were kissed by dementors in fanfiction, it'd be a really dark plot twist. First off, the act of the Dementor's Kiss sucks out the soul. So Harry would be left as an empty shell. The wizarding world would be in chaos. His friends like Ron and Hermione would surely go on a desperate quest to somehow reverse the situation, perhaps seeking powerful magic that had been long forgotten.
If Harry Potter was kissed by dementors in fanfiction, it would be a tragic event. The Dementor's Kiss is a very cruel and final act in the wizarding world. Once Harry's soul is removed, the Hogwarts community would be in mourning. Dumbledore might try to figure out a way to bring Harry back, if there was any possible way. And Voldemort's side would either celebrate the loss of their biggest enemy or be worried about the unforeseen consequences of Harry's death, like a possible uprising from those who were inspired by Harry.
If Harry Potter was kissed by dementors in fanfiction, the whole story would take a different path. Since Harry is the central character, his absence due to the Dementor's Kiss would mean that the prophecy related to him would seem unfulfillable. Hermione and Ron would likely become the main protagonists, but they would be facing a much more difficult situation without Harry's unique abilities and connection to Voldemort. Also, Hogwarts itself might lose its hope as Harry was seen as a symbol of hope against the dark forces.
Well, it would be a really dark take. Harry would probably be constantly in a state of near - despair. Since Dementors are soul - sucking creatures, he might have a hard time forming normal relationships. His view of the wizarding world would be very different from the original story. He might see it as a place full of threats and darkness rather than a place with some good in it. And his Patronus, if he could even produce one, would be very weak or have an unusual form.
In fanfiction, if Harry lives with dementors, it would be a very dark and challenging situation. Harry might constantly be in a state of fear and depression. The dementors' presence would likely drain his happiness and positive emotions. He might have to find ways to resist their influence, perhaps by using powerful Patronus magic more frequently.
It could be really wild. Maybe Harry uses his Patronus charm in a new and unexpected way. Instead of just driving the dementors away, he somehow makes the Patronus 'entertain' the dementors. Like the Patronus could be a stag that does acrobatic jumps and the dementors are curiously watching it, almost like they are being played with.
If Harry killed dementors in a fanfiction, it could have several implications. For one, it could be a sign of his growth and mastery of magic beyond what was shown in the books. It might also lead to a different relationship between him and the Ministry of Magic. Since dementors were used as guards in Azkaban, their deaths could cause chaos in the prison system. Additionally, it could change the perception of the dark side in the wizarding world, as dementors are a symbol of the darkest elements.
In a fanfic where Harry is kissed by a Dementor, he would likely lose his soul. This is because the Dementor's kiss sucks out a person's soul. It would be a very dark turn for the story. His friends would probably be devastated and the fight against Voldemort would take a huge hit as Harry was seen as a key figure in that battle.
Well, in some fanfictions, Harry might use a super - powered Patronus. His Patronus could be stronger than usual, perhaps due to some newfound magic or a special connection he has developed. It could be so powerful that it simply overpowers the dementors and destroys them.
It's often described as an icy - cold and terrifying experience. The Dementors are usually depicted as hovering over the female Harry Potter character, their hooded forms menacing. The Kiss itself might be described as a sort of draining sensation, like all the warmth and hope being sucked out of her.
He might also be a bit confused at times. Some fanfictions deviate a lot from the real events in his life. For example, if there's a fanfiction where he has a completely different upbringing, it would be strange for him to read about. He could also feel a sense of flattery that so many people are interested in his story and want to create their own versions of it.
One possibility is that Harry would grow up to be a very different person. Dementors are creatures of despair, so he might be more withdrawn and less trusting. He could also have some very dark powers, having been exposed to the dementors' influence for so long.