One interesting fanfiction could be 'The Darkening Plague' where Harry's coughing blood is a sign of a dark curse spreading in Hogwarts. It has a great plot that weaves mystery and magic.
In 'Harry's Hidden Affliction', the coughing blood is related to a secret family magic that Harry uncovers. It's a really engaging read as it delves deep into the Potter family lore. There are a lot of emotional moments as Harry struggles with this unknown illness while still dealing with his normal Hogwarts life and the threat of Voldemort.
There's also 'Cursed Bloodline' where the coughing blood is part of a much larger conspiracy against Harry. The story has complex characters and a great build - up of suspense. It shows how Harry tries to find the source of his affliction while facing numerous obstacles both from within the wizarding world and his own self - doubt.
It could be a dark magic curse. Maybe some enemy has cast a spell on Harry that is slowly sapping his health, leading to him coughing blood.
Well, it could be a result of a dark spell cast on him by a Death Eater. Maybe they found a new and insidious way to harm him without leaving an obvious trace.
It could be a new dark wizard. There are always new threats emerging in the fanfiction world. This new dark wizard might have a vendetta against Harry and uses a special spell or potion to make him cough up blood.
Another possibility is internal injuries from a battle. Fanfiction often has intense battles that are not part of the original story. Harry could have been hit by a powerful spell during a fight that caused internal damage, which then makes him cough up blood.
One popular 'natsu coughing blood fanfic' might be 'Natsu's Struggle'. In this fic, Natsu's coughing blood could be a sign of a hidden illness or the result of a powerful dark magic he was exposed to. It often delves into the emotional turmoil of his friends as they try to find a cure for him.
It could be due to a dark curse or spell. Maybe he was attacked by a powerful dark wizard using a forbidden spell that affects his internal organs and causes bleeding.
One great 'Harry Potter arachnid fanfiction' could be one where Harry has to face a giant arachnid in the Forbidden Forest in a way that wasn't shown in the original books. It could explore his fear of spiders in a more in - depth way.
Fanfiction often takes the original elements of a story and twists them. In 'harry potter and the blood fanfiction', it could be that the author explores the significance of pure - blood, half - blood and Muggle - born status in a different way. For example, they might create a story where the blood status of a character is the key to unlocking a powerful magic that was previously unknown in the original Harry Potter series. It could also be about a secret society that is formed based on blood relations within the wizarding community.
He could be secretly worried. Snape might use his knowledge of potions and dark magic to try and find a cure or at least a way to stop the bleeding. He may also be conflicted, as his past relationship with Harry and his loyalty to different sides in the wizarding world play a role in how much he wants to help Harry.
It could lead to a discovery of a hidden plot against Harry. His coughing up blood might be a sign that there is a much bigger conspiracy at play, perhaps involving someone close to him who wants to weaken him for some ulterior motives.