One great fanfic could be 'Chihiro and Haku's New Adventure'. It might explore their relationship further after the events of the movie, like them exploring new parts of the spirit world together.
Some fanfics might focus on the emotional connection between Chihiro and Haku. For example, a fanfic could show how Haku protects Chihiro from a new threat in the spirit world that she accidentally stumbles upon. Their interactions would be filled with the same sense of mystery and loyalty as in the movie.
There could be a fanfic titled 'Chihiro's Return to the Spirit World: With Haku'. In this, perhaps Chihiro finds a way back and her bond with Haku is rekindled in a more profound way. They face new challenges side by side, and their relationship deepens as they rely on each other.
A fanfic could focus on a journey that Haku and Chihiro take together within the spirit world that they didn't get to do in the movie. They could face new challenges and in the process, their relationship deepens as they rely on each other for support.
One idea could be a story about Haku and Chihiro reuniting in the spirit world years later. Chihiro has grown up but still remembers Haku vividly. Another could be a fanfiction where they go on an adventure together outside of the bathhouse to explore other parts of the spirit realm that were previously unknown to them.
One idea is that Chihiro gets trapped in a different part of the spirit world and Haku has to use all his powers to find her. Along the way, he realizes just how much she means to him.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - created works, and you're likely to find many Spirited Away fanfics there, including ones about Chihiro and Haku.
In the fanfic, their relationship could develop in a rather magical way. Haku, being a spirit, has a different view of the world compared to Chihiro. But as they interact more, they start to see things from each other's perspective. Maybe they start with simple exchanges like sharing a meal in the spirit world. Then, as time passes, they find themselves drawn to each other. Haku might show Chihiro secret places in the spirit world, and these shared experiences make their bond stronger. Eventually, they develop a love that's both pure and powerful, full of little affectionate moments like stolen glances and gentle touches.
Their relationship could be developed by having them communicate more deeply. For example, Haku could share more about his past and his true form with Chihiro. This would create a stronger bond between them as Chihiro would understand him better.
One possible plot could be that Haku and Chihiro meet again in the spirit world years after Chihiro's first visit. As they reunite, they start to explore their feelings for each other more deeply. They go on adventures together, facing new spirits and challenges, and their relationship gradually blossoms into a romantic one filled with tender moments and mutual understanding.
One possible plot could be that the kiss is a moment of realization for both Chihiro and Haku. It might be a way for them to break a spell that has been holding Haku in some sort of limbo. After the kiss, Haku could start to remember more of his true self and his past, which could lead to him being able to finally leave the spirit world and find peace. And for Chihiro, it could be a sign of her growing up and understanding her feelings in this strange world she has found herself in.
Well, it would likely be a very different take on the Spirited Away universe. It might explore how their relationship would change with such a big development. Maybe it would show them facing challenges in the spirit world while also dealing with the new life they are about to bring into the world. However, it's important to note that this is a departure from the original story's tone.
It could add a romantic element that changes the dynamic between the characters. Instead of just being friends or allies, it makes their relationship more complex. This could influence how they interact with other spirits in the story. For example, some spirits might be more accepting while others could be jealous or against it.