In such a fanfiction, it could be a very strange and unique scenario. Harry might face a lot of internal conflict. Loving a succubus, which is often associated with dark and alluring yet dangerous entities in mythology, would put him at odds with his normal values. He might struggle to reconcile his feelings for this otherworldly familiar while also trying to maintain his place in the wizarding world.
Well, perhaps the succubus could initially be a mystery to Harry. She might seem like an ordinary creature at first, but then he discovers her true nature. Maybe she helps him in some unexpected ways in his battles against Voldemort, like using her unique powers to distract the Death Eaters.
There could be. Fanfiction writers are very creative and they come up with all sorts of ideas. But it might be a bit of a niche concept. You could start by looking on large fanfiction platforms like Archive of Our Own or FanFiction.net. Search for 'Harry Potter' and'succubus familiar' and see if anything comes up. It's also possible that it exists but is not very well - known or popular yet.
A succubus familiar can be incorporated by first establishing its magical nature. For example, it could have powers related to charm and allure, which are common traits of succubi. In a fanfiction, it might be a familiar that a dark wizard or an outcast wizard has. The succubus familiar could use its charm to help its master in various ways, like getting information from other characters or sneaking into restricted areas.
The main antagonist could be the Ministry of Magic if they view the succubus as a dangerous and uncontrollable creature. They might try to separate Harry from his familiar, and in the process, become the main force that Harry has to oppose.
Well, it could be really interesting. A succubus is often depicted as a seductive and otherworldly being. In this fanfiction, perhaps the succubus familiar would help Harry in ways that are different from his normal magical friends. It might use its unique powers to assist him in battles, like confusing the enemies with its charm. Or it could also bring some chaos to Hogwarts as its nature might not always align with the school's rules.
In a fanfiction, the relationship might develop in an unexpected way. Harry Potter, who is used to the more 'normal' magical creatures, meets the succubus familiar. At first, he might be repelled by her nature, but gradually he discovers that there is more to her. They could bond over shared experiences in the magical world, like facing a common enemy. However, the relationship would always be on shaky ground due to the succubus's reputation and her own powers that could be both a help and a hindrance.
There is a fanfiction titled 'Succubus Familiar: A New Chapter in Hogwarts'. In this one, the succubus familiar brings a whole new dynamic to the familiar - wizard relationship as seen in the Harry Potter series. It might show how the succubus has different powers compared to normal familiars like cats or owls. It also could be interesting in terms of how other characters in the Harry Potter world react to this strange and alluring familiar.
Well, it could be that Harry, in this fanfic, discovers a way to bind the succubus familiar through some ancient magic he stumbles upon. Maybe he needs its powers for a particular task, like fighting a new dark force in the wizarding world.
Maybe there's a demon lord who has some sort of claim over the succubus. This demon lord sees Harry's binding of the succubus as an insult and a threat, and thus becomes the main antagonist. He would then send his minions or use dark magic to try and break the bond between Harry and the succubus.