Voldemort would still be a likely villain. He is the main antagonist in the original series and his threat to Harry is always present. Even if Harry is trying to save himself, Voldemort's power and his desire to kill Harry would make him a formidable foe.
It could show Harry relying on his own inner strength and knowledge. Maybe he discovers a new spell through his own research in the library at Hogwarts, a spell that helps him fend off a powerful dark wizard without the help of his friends. For example, he might find a spell that can create a shield of pure energy that not only blocks dark curses but also reflects them back at the attacker.
If he stabs himself in a non - vital area, he might survive but be severely weakened. This could lead to him having to rely on his friends more for protection and support, changing the dynamics of their relationships.
It could be due to the trauma he has experienced. Losing friends and facing Voldemort multiple times has surely left deep scars. Isolating himself might be his way of dealing with the post - trauma stress. He needs time alone to heal and come to terms with everything that has happened.
No. The Harry Potter series is aimed at a wide range of audiences, including children and young adults. Such a concept is inappropriate and goes against the values of the original story which promotes friendship, courage, and the fight against evil.
In some fanfictions, Harry might use his magic skills. For example, he could use spells to protect Naruto from a powerful enemy. Maybe he casts a shield charm to block an attack that Naruto couldn't avoid on his own.
Yes, there might be. The 'Harry Potter' and 'One Piece' (where Marineford is from) fanfic communities are quite large and creative. There could be a crossover where Harry Potter somehow saves Ace at Marineford. You can check fanfic platforms like Archive of Our Own or FanFiction.net to see if such a story exists.
He might miss out on important relationships. By isolating himself, he could push away his friends who truly care about him and damage those friendships.
Yes, it is. Harry Potter is a beloved character, and the idea of him shooting himself goes against the generally positive and heroic image he has in the original series. It's disturbing because it involves self - harm and the destruction of a character that many fans look up to.