One possible plot could be that Voldemort initially doesn't believe Harry. He might think it's a ploy by Harry to create discord among his Death Eaters. But then he starts to suspect Snape when he recalls some of Snape's past actions that seem a bit off in the context of loyalty to him.
Dumbledore often makes an appearance in such fanfiction. He might be the one who gives Harry and Hagrid their special tasks or provides guidance. Another popular character could be Hermione. She could be the one who helps Harry and Hagrid with research or comes up with clever solutions when they are in a bind. Ron might also be there, adding some humor to the story and being Harry's loyal friend as usual.
In a fanfiction scenario, Harry's actions could cause a complete breakdown in any potential for a positive relationship between them. Snape's loyalty to Dumbledore and his role in protecting Harry from the shadows would be put at risk. Harry would have to face the fact that he may have made a huge mistake. And Snape, who has sacrificed so much already, would be in an even more precarious position, both with Voldemort and in the wizarding world in general. This could lead to a chain of events that completely alters the course of the wizarding war, with far - reaching consequences for both Harry and Snape.
Well, 'Hagrid's Lost Love' is a very touching fanfiction. It tells a story of Hagrid's past love and how it affected his life. The way it describes Hagrid's emotions is really heart - felt. Another one is 'Hagrid's Encounter with the Dark Arts'. This one shows Hagrid facing some dark magic elements and how he overcomes them. And 'Hagrid's Role in the Wizarding War' gives a different perspective on Hagrid's contributions during the war.
One possible reason could be that Sirius, being Harry's godfather, feels it's his right and duty to protect Harry. He might not trust Hagrid fully to keep Harry safe, especially considering the dangerous situation Harry is in. Sirius has a strong connection to Harry and wants to be directly involved in his upbringing and protection.
Snape could be in great danger. Voldemort might immediately try to kill him. Snape would have to fight for his life or try to escape. His status among the Death Eaters would be completely ruined, and he'd become a hunted man.
It could involve Dobby helping Hagrid in some magical task on Hogwarts grounds. Maybe Dobby uses his unique house - elf magic to assist Hagrid with taking care of the magical creatures. For example, he could magically clean up the dragon's lair in a blink of an eye when Hagrid has trouble doing it the normal way.
There are many ways this could happen in fanfic. One way is that Harry uses his connection with Voldemort's mind. Since Harry has a link to Voldemort's thoughts, he might be able to pick up on Voldemort's doubts about Snape. And then Harry starts to investigate Snape further. He might recall some strange actions of Snape in the past, like his ambiguous loyalty during certain battles or his secret meetings with some unknown figures. Combining all these, Harry eventually realizes that Snape is a spy.
There are not many fanfictions that would combine Daphne, Voldemort and Harry in the context of handfasting in a traditional sense. Handfasting is often associated with a form of magical binding or marriage - like ceremony in the wizarding world in fanfiction. However, if it exists, it would likely be a very dark and complex story. Maybe Daphne could be caught in the middle of the eternal battle between Harry and Voldemort, and the handfasting could be some sort of dark ritual Voldemort forces upon them. But this is all speculation as it's not a common or typical fanfiction trope.
In fanfiction, Hagrid often helps Harry by providing emotional support. He's always there with his big, warm heart to cheer Harry up when he's down. For example, after a tough encounter with a bully at Hogwarts, Hagrid might give Harry a big bear hug and tell him not to let the bully get to him.