One great post 'Kingdom of Ash' fanfiction could be about the characters' new lives in a rebuilt world. For example, it might focus on Aelin and Rowan starting a family and dealing with the challenges of ruling a peaceful kingdom after all the chaos. It could explore how they teach the next generation about the sacrifices made to get to this point.
First, think about the characters you want to focus on. You could choose the main characters like Aelin or expand on the side characters. Then, decide on a plot. It could be a continuation of their story, like what they do after the big battle. Make sure to stay true to their personalities as they were in 'Kingdom of Ash'.
One popular 'kingdom of ash romance novel' could be 'Throne of Glass' series which has elements of a grand, war - torn kingdom and deep romances. It's filled with strong characters and their complex relationships.
It's very difficult to find a legal way to read it online for free. Publishers and authors rely on sales to make a living, so they don't usually offer their books for free on the open web. However, as I said before, libraries might be an option.
In some fanfictions, Ash might become evil after heartbreak by losing his faith in the goodness of the world. For example, if a character he deeply trusted betrays him, he could start to view relationships as tools for power or revenge. This new mindset might lead him to make choices that are considered evil, like using underhanded tactics to defeat opponents or turning a blind eye to the suffering of others.
In some fanfictions, Ash might become evil after betrayal when his trust is shattered. For example, if his friends turn on him for some false accusations, he could start to see the world in a different, more cynical way. This broken trust might lead him to believe that power is the only thing that matters, and he starts to pursue it without regard for the consequences, gradually turning evil.
Well, after the kiss, perhaps they decide to participate in Pokemon contests together. Serena's expertise in contests and Ash's battle skills could combine in unique ways. They might also meet new friends and rivals along the way, all while their relationship deepens and they face challenges as a couple.
Often, there are also side characters that play important roles in the romances. These could be friends, mentors, or even enemies that add depth to the main characters' relationships. In some novels, a wise old wizard or a loyal servant might influence the course of the main characters' love stories, either by providing advice or by creating obstacles that test their love in the context of the kingdom's difficult situation.
Another option could be to look for audiobook versions on platforms like Audible. Sometimes they offer free trials which might include access to 'Kingdom of Ash'. But remember, always make sure you are using legal means to access books to support the authors and the publishing industry.