I'm not sure specifically as I haven't read it. But generally, it might be about a magical world where there are intense battles or onslaughts of some sort, perhaps magical creatures fighting against each other or a group of magic - users facing challenges.
Since I haven't read the 'Magic Onslaught Novel', I can't say for sure who the main characters are. But they could be young wizards or witches learning to control their magic during this onslaught.
The unique aspect of onslaught graphic novels is their antagonist. Onslaught is a very different kind of villain compared to the typical ones in graphic novels. He has a complex origin story that ties in with many well - known superheroes.
First, you need to understand the character of Palkia. Since it's female in this case, think about how a female Palkia might behave differently from a male or the general Palkia. Then, come up with a plot. It could be something like Palkia's adventure in a new world or her relationship with other Pokémon. For the lemon part, you need to be careful and tasteful. Don't just jump into it. Build up the relationship and the tension first. For example, through their conversations and shared experiences.
Well, it could be about Naruto somehow getting involved with Palkia. Maybe Naruto discovers a new realm where Palkia exists and has to form an alliance with it to fight a common enemy. He might learn some new powers from Palkia that are different from his regular ninja skills.
One great 'age of onslaught fanfic' could be 'The Heroes of Onslaught'. It has a really engaging plot that follows a group of underdog characters during the age of onslaught. Another one is 'Onslaught's Legacy' which delves deep into the aftermath of the events in the age of onslaught and how it shapes the future of the fictional world.
One idea could be a story where the balance between the different dimensions overseen by Dialga (time), Palkia (space), and Giratina (the distorted world) is disrupted. Arceus, as the creator deity, has to step in. Maybe a powerful, unknown force is causing chaos, making time and space fold in on each other. Giratina, usually banished to the Distortion World, finds itself drawn back into the normal world, causing all sorts of mayhem. Dialga and Palkia try to fix things on their own but realize they need Arceus' help. The fanfic could focus on their journey to restore order and the sacrifices they might have to make along the way.
It could be a dark entity that wants to use Palkia's power for evil. Maybe an ancient evil spirit that has been sealed away for a long time but now wants to break free and use Palkia as a key to unlock ultimate power. Naruto and Palkia would have to team up to stop it.
One popular 'onslaught graphic novel' is 'Onslaught: Marvel Universe'. It features an epic battle between the X - Men and Onslaught, a powerful and complex villain. The art in it is quite stunning, really bringing the intense action to life.