In many fanfictions, it's about Percy being an anomaly in the world of gods and demigods. His unique abilities and experiences set him apart. Artemis, being intrigued by his differences, starts to interact with him more. As they spend more time together, their relationship grows, and the kiss is just a manifestation of the deep connection that has been building up through all their shared experiences and conversations.
Some writers use the idea of a common enemy. If there is a powerful foe that threatens both Artemis and Percy's worlds, they are forced to team up. During this cooperation, they discover new sides of each other. Percy might show his loyalty and courage in a way that makes Artemis fall for him, and thus the relationship is justified.
Writers often justify their relationship by showing character growth. For example, Draco might have realized the error of his ways after the war and Hermione, being the empathetic person she is, starts to see the good in him. This gradual change in their personalities makes their relationship seem more plausible.
Authors often justify their relationship by showing character growth. For example, Draco might be shown to have changed from his prejudiced ways in the original series. They may also create a situation where Draco and Hermione are forced to interact and see each other in a new light. This could be through a common goal or a shared danger.
Writers often justify their relationship by highlighting their common traits. For example, both are highly intelligent. Hermione is known for her academic prowess and Snape is a master of potions and dark arts knowledge. This shared intelligence can be a basis for mutual attraction. They also both have a sense of loyalty, though it shows in different ways. Hermione to her friends and Snape in his own complex way to Dumbledore and Hogwarts.
They might justify it through misunderstandings. Maybe Arthur is tricked into a situation that looks like cheating but he's really trying to protect Merlin in some convoluted way.
A possible justification could be a deep exploration of Harry's post - traumatic stress. Writers might think that after years of fighting and losing so many people, Harry could reach a breaking point. But really, the Harry Potter we know from the books has a strong will and a support system that should prevent such a tragic end. So, these justifications seem more like attempts to create shock value rather than staying true to the character's nature.
Some writers justify it by exploring a deep emotional connection. Maybe Draco has been protecting Harry in the fic, and Harry starts to see him as a paternal figure. For example, if Draco saves Harry from a great danger multiple times, Harry might develop a sense of dependence and respect that could lead to this. Another way is through a magical bond. If there's a spell or a magical accident that links them in a way that Harry feels a child - like connection to Draco, it can be used as a justification.
Some might justify it as a way to explore the dark side of Oliver's character. They could be trying to show how power and stress could corrupt him.
They might justify it through her past traumas. For instance, if Sakura has faced repeated rejections or has been constantly overshadowed in the original story, a writer could use this as a reason for her to betray. She could feel that she has been treated unfairly and that her so - called friends never really understood her pain. So, in the fanfiction, she decides to take a different path that is seen as a betrayal to those around her.
Well, often they use the idea of Naruto's strong will. They say that his will is so strong that it breaks the normal limits of what is possible in the Naruto universe. So, his will allows him to access these impossible powers. Also, in some fanfictions, Naruto goes through some extreme and unique training or experiences that no one else has had, and this is what gives him these extraordinary abilities. For example, he might travel to a different dimension where the laws of physics and chakra are different, and when he comes back, he has these new powers.
Some writers might justify it by exploring the idea of redemption. They could write Voldemort in a way that shows a glimmer of humanity that Harry, being abused, might be able to relate to on some level. Maybe Voldemort has a hidden past that makes him more complex than just the evil wizard we know.