She could have her own special Beyblade. Perhaps it was a gift from Tyson, and she discovers that it has unique powers. This could lead to her going on her own journey in the Beyblade world, facing challenges and making new friends along the way.
Maybe she gets kidnapped by an evil Beyblade organization that wants to use her to get to Tyson. Tyson then has to go on a rescue mission, and during this time, we could see flashbacks of their childhood and how much they mean to each other. This would add depth to the story and also show the lengths Tyson would go to protect his sister.
The fanfic could center around her trying to bring back Tyson's confidence if he ever loses it. She might use her own understanding of the sport and her relationship with him to boost his morale. For instance, she could organize a special training session just for Tyson, with some new strategies she has devised.
One possible fanfic could be about Tyson's sister getting involved in the Beyblade world herself. Maybe she starts training secretly and then surprises everyone with her skills during a local tournament.
A Tyson birthday fanfic might focus on Tyson reflecting on his journey in the Beyblade world as he turns a year older. It could show how far he has come, from his first battles to becoming a more skilled and confident blader. Maybe he'll receive a special Beyblade from a mysterious figure during his birthday that has some unique powers.
Tyson might start losing battles he would normally win. Since he's mind - controlled, his skills and strategies could be altered by the controller. His beyblade might behave erratically as well.
It could be that Hilary gets kidnapped by a rival Beyblade group who wants to use her to get to Tyson. Tyson, of course, goes to rescue her. After a long and difficult battle, he finally saves her. In the aftermath of the rescue, with all the emotions running high, Tyson and Hilary share a passionate kiss as they realize how much they mean to each other.
A plot could involve a mystery where Tyson's beyblade starts acting strangely and Kai decides to help him figure out what's wrong. Along the way, they discover a secret about an ancient beyblade power that could change the entire Beyblade world. This journey brings them closer as they face various challenges together, like battling against an unknown group who wants to steal this power for themselves. In the end, their friendship is strengthened, and they use this newfound knowledge to become even better bladers.
In a Tyson - centric mind - control fanfic, the story might start with Tyson suddenly losing his free will during a big beyblade tournament. His opponents start to take advantage of his situation, but his true friends don't give up on him. They try different strategies to reach Tyson's true self, like using their own beyblades' powers in a unique way to break the mind - control spell. It could be a story full of action, friendship, and the struggle against dark forces.
First, you should know Tyson's character well. Include his determination and love for Beyblade in the story. For example, on his birthday, he could be challenged to a friendly Beyblade match by his friends, and his usual fiery spirit shows up.
One idea could be that Tyson and Hilary get lost in a mysterious Beyblade tournament location. They have to work together to find their way out while also facing some tough opponents. Another plot could be a story where Hilary discovers a new Beyblade technique and she and Tyson train together to perfect it for an upcoming big match.
Their relationship growth could be a fascinating aspect. In the beginning, they had their differences. But in married life, they learn to appreciate each other more. Tyson starts to see the value in Hilary's meticulous planning, and Hilary comes to love Tyson's passion for Beyblade. They might also have to deal with jealousy from other characters who were once interested in either Tyson or Hilary.
Romance can also be a common theme. Some fanfictions play with the idea of a romantic relationship between Hilary and Tyson. It could start as a subtle attraction that gradually blossoms. Also, teamwork is a big theme. Their ability to work together as a team, with Hilary providing strategic advice and Tyson being the main fighter, is often explored in detail. For example, in some stories, they face a really tough opponent and have to rely on their teamwork to win.