What are the possible plotlines in 'Harry is Izaya fanfiction'?

A possible plotline could involve Harry being transported to the world of Alduin and being mistaken for Alduin at first. As he tries to figure out what's going on, he has to learn about Alduin's powers and how to control them. Meanwhile, the real Alduin might be on the loose and Harry has to either stop him or find a way to co - exist with him. There could also be a plot where Harry uses his knowledge from the wizarding world to bring about new changes in the world of Alduin, which might be met with resistance or acceptance from the natives of that world.

One possible plotline could be Harry struggling to accept hugs or physical contact from his friends, causing misunderstandings among them.

One possible plotline could be Harry struggling to keep up with his magical training due to his anemia. He might have to find alternative ways to gain strength for spells.

Perhaps Harry becomes a priest to atone for the sins and destruction caused during his battles in the wizarding world. His journey could involve him trying to bring peace and spiritual guidance to a war - torn or troubled community. And along the way, he might face challenges from those who sense his 'different' past.

One possible plotline could be Harry using his vegan lifestyle to promote animal rights in the wizarding world. He might start a club or campaign within Hogwarts to encourage others to be more conscious about their food choices.

One plotline could be Naruto being a transfer student at Hogwarts. He might struggle to adapt to the magic system while also showing off his ninja skills. Another could be Naruto teaming up with Harry Potter to fight a common enemy that threatens both the ninja world and the wizarding world.

One possible plotline could be Harry using his knowledge of the wizarding laws, which he learned through his years at Hogwarts and his experiences with the Ministry of Magic, to defend wrongly accused wizards in a wizarding court. Another could be him trying to reform the wizarding legal system which he might find full of loopholes and biases.

One possible plotline could be that Petunia has a sudden realization of how unfairly she has treated Harry over the years and tries to make amends. She might start by secretly helping him with things around the house or protecting him from Dudley's bullying.

Maybe in a fanfiction, Harry could be framed for something he didn't do, and Snape, believing the false accusations, smacks him in a moment of anger. This could then lead to a series of events where Harry tries to prove his innocence and Snape has to come to terms with his hasty action. Another plotline could be that Snape is under the influence of a dark spell that makes him act out of character, and Harry just happens to be in the wrong place at the wrong time and gets smacked.

One possible plotline could be Harry trying to hide his merman identity while at Hogwarts. He might face challenges in the magical underwater areas of the school, like the lake. Another could be that he discovers his merman heritage and has to go on a journey to learn more about it and his new powers.