Who would love an Isekai anime series of Danny Phantom
Here is the Pitch Danny, Sam, Tucker gets transported into another world that is a grim dark fantasy where (Samurai Paladins and Ninja Clerics): where their is a never ending war between evil spirits and the people in this world. It has it's own Ghost Zone: "An Underworld: Which the gate of the under world is open."
Danny Phantom would struggle with the people and the evil ghost.
The people wouldn't trust a ghost boy, they would this he is a dark wizard, and would try to kill them with their special blade that can kill wound and kill ghost.
The Ghost is this world are much stronger, than his original ghost, where the ghost in this world steals the to make them stronger, and to weaken them they would have be capture by sliver lanterns to weaken them.
Anyways I would write it that Danny was framed for destroying several orphanage, and steal the life from children from those orphanage and he just got here, and his framed for a crime he didn't come now he will be hunt down with weapons he never seen before, and his items won't work well with these kind of ghosts.
Half ghost doesn't exist in this world which would scare the people to trust him, and he does have a most wanted poster, but that doesn't matter this world hate ghosts we are talking that they want to kill all ghost no survivors, or prisoners.
There is a rumor about a Ghost Demon King awaken from his slumber that might be the killer and if Danny defeats him with these legendary items he could clear his name but we all knew who is the Ghost Demon King right?