Maybe there could be a fanfiction where Shan Yu has a younger sister who looks up to Mulan. Shan Yu is initially against this friendship, but as he sees how Mulan influences his sister in positive ways, he starts to have a change of heart. Mulan, on the other hand, through her interactions with the sister, gets to know Shan Yu in a different light. This could lead to a slow - burning romance as they both overcome their initial prejudices.
One idea could be that after Shan Yu's defeat, instead of dying, he is captured and Mulan is tasked with guarding him. During this time, they start to have conversations that make them see each other in a different light. Shan Yu might share his past and the reasons for his aggression, and Mulan might start to understand the complexity of war from his perspective.
The plot could involve Shan Yu being resurrected by a dark magic and Mulan being the only one who can stop him again. But as she tries to defeat him, she discovers that he has some new motives that are not entirely evil. This could lead to a series of encounters where their relationship evolves from pure hatred to something more complex, with the 'lemon' aspect being a hint of a more passionate connection that starts to develop between them.
One positive interpretation could be a story where Mulan and Shan Yu, through their encounters, come to understand the value of peace. Shan Yu might see Mulan's courage not as a threat but as a sign of the strength of her people, and they could potentially work towards a truce.
The character dynamics are complex. Shan Yu is a ruthless and power - hungry warrior, while Mulan is a brave and selfless hero. At first, they are at extreme opposites. Shan Yu might view Mulan as just another enemy to be conquered, while Mulan sees Shan Yu as a threat to her people. However, as the story progresses, their views could change. For example, Shan Yu might start to respect Mulan's courage and tenacity, and Mulan might begin to understand the circumstances that led Shan Yu to become a warlord. This new understanding could create a tense but interesting relationship between them.
Once upon a time, Shan Yu was leading his Hun army when he spotted Mulan in the distance. Instead of attacking immediately, he was intrigued by her courage. Mulan, seeing Shan Yu, readied her sword. But Shan Yu said, 'You are a brave one, girl.' Mulan replied, 'I will not let you harm my people.' Shan Yu laughed and said, 'We shall see.' And so began an unexpected encounter between them.
One idea could be a story where Shan Yu's OC has a secret alliance with a small group within the Imperial City. This group helps the OC gather intelligence about the Emperor's plans, adding a layer of mystery and intrigue to the story.
Common themes in Mulan Shan Yu fanfiction include the theme of forgiveness. Mulan may have to forgive Shan Yu for his past actions, or vice versa. Another is the theme of adventure. They might go on adventures together, exploring new lands. And the theme of acceptance is also there. Shan Yu has to accept Mulan as a worthy adversary or more, and Mulan has to accept Shan Yu as a complex being rather than just a villain.
The fanfic might be about Mulan trying to redeem Shan Yu. She believes that there is good in everyone, even a fearsome villain like him. So she decides to visit Shan Yu in prison. Shan Yu is initially very resistant to her attempts at conversation and reformation. However, Mulan keeps coming back and sharing stories about her own life, her family, and her village. Slowly, Shan Yu starts to listen and is intrigued by her tales. This could be the start of a transformation in Shan Yu's character as he is exposed to Mulan's values.
Maybe Hiccup, being a dragon rider, discovers that Mulan has a special connection to dragons in her own world. They could team up to protect the dragons from an evil force that is trying to hunt them down. Their relationship could develop as they face this common threat.
One common theme could be the idea of redemption. Shan Yu being the villain, the fanfiction might explore how Mulan could change him through love. Another theme could be the breaking of boundaries, as they are from different sides in the original story. Maybe a theme of forbidden love as well.