A new student who discovers they have a strange connection to the blood of all four houses. They might be an orphan, not knowing their true heritage until they start at Hogwarts and strange things start to happen. Their powers start to show and it becomes clear they are different from the other students because of their four - house blood.
It could be a long - lost relative of the founders. Maybe a distant cousin of Gryffindor, Ravenclaw, Hufflepuff and Slytherin. This person might have been hidden away for years and now resurfaces.
It could be a long - lost descendant of the founders of all the houses. Maybe a distant relative of Godric Gryffindor, Salazar Slytherin, Rowena Ravenclaw, and Helga Hufflepuff. This character would be in a unique position as they have the blood of all the great wizards and witches who founded Hogwarts.
The plot could involve a mystery surrounding this person with the blood of the four houses. They could be hunted by dark forces who want to use their special blood for evil purposes. At the same time, they are trying to uncover secrets about their heritage within the four houses.
Well, in a 'Harry Potter Blood of All the Houses' fanfic, the plot might revolve around a new student at Hogwarts who is an orphan. As they get sorted, the Sorting Hat has a hard time placing them because it senses the blood of all the houses in them. This student then becomes a sort of bridge between the different houses. They might use their knowledge of the different house traits to bring the students together during a time when the school is divided, like during a Quidditch tournament where there is a lot of inter - house rivalry.
Maybe it's a well - known character like Hermione. Given her intelligence and leadership skills, she could be thrust into a situation where she becomes the lord of many houses. She would then use her knowledge of magic and her ability to make friends across different groups to manage the houses effectively.
It could be a new student at Hogwarts. A young wizard or witch who has just discovered the magical world and also has a deep love for Shibas. They might be the one going through the strange blood test and their Shiba - loving nature could be what sets them apart in the story.
It could be a new character, like a young Auror who has been assigned as an inspector. He would be fresh out of training and eager to prove himself at Hogwarts. He might be a bit naive at first but quickly learns the ropes and uncovers some interesting things about the school.
It could be a young witch who is just starting to explore her magical abilities outside of Hogwarts. She takes on a babysitting job to earn some extra money and ends up having all sorts of magical adventures with the kids she babysits.
A new character could be the main character. For instance, a Saiyan who has been transported to the Harry Potter universe. This character would have to navigate the strange new world of magic while also dealing with their own Saiyan instincts and powers.
It might also be a descendant of one of the well - known characters from the Harry Potter series. For example, a grandchild of Sirius Black who inherits his rebellious spirit and uses it to fight against the new dark forces as the 'darkslayer'.
A new student at Hogwarts could be the main character. They might be a bit of an outcast and find solace in the graveyard. There, they stumble upon a mystery that no one else has noticed before, and it becomes their mission to solve it. This would be a great way to introduce a fresh perspective to the Harry Potter fanfic world.