The plot could be that Female Shu is a prodigy beyblader who has just moved to town. Valt, eager to test his skills against her, challenges her to a battle. She wins easily, which makes Valt determined to improve. He asks her for advice, and she agrees to help him. As they train together, they develop feelings for each other. But then an old enemy of Valt's returns and challenges them both. They have to work together to defeat the enemy and in the process, their relationship deepens.
Well, perhaps in this fanfiction, Valt discovers that Female Shu has a unique beyblade that has special powers. He becomes curious and wants to learn more about it. They start to spend time together researching and testing the beyblade. Along the way, they get into all sorts of adventures, like facing off against a group of beyblade thieves who are after Female Shu's special beyblade. Their relationship blossoms as they rely on each other to protect the beyblade and defeat their foes.
They could be on a journey to find a rare and powerful Beyblade part. Valt's curiosity drives him to seek it out, and Fem Shu joins him because she believes it could give her an edge in competitions. Along the way, they face various challenges and obstacles, such as other bladers who also want the part. They might have to battle these opponents and also solve puzzles to reach their goal.
In a fanfiction, Female Shu could be a new transfer student to Valt's school. Valt, being the friendly and enthusiastic beyblader he is, welcomes her. They quickly discover their shared love for beyblading. However, Female Shu has a secret technique she's been developing. Valt, intrigued, tries to learn from her and in the process, they develop a bond that goes beyond just beyblading. They support each other through personal and beyblade - related challenges.
One idea could be a story where Valt and Shu are training together for an upcoming big tournament. They face various challenges during their training, like dealing with new and powerful opponents' techniques. As they train side by side, they start to understand each other's strengths and weaknesses better, and their friendship deepens into something more, with a lot of cute and competitive moments along the way.
In a fanfiction, Valt and Fem Shu could be in a situation where they have to rescue their Beyblades from an evil force. Valt would be all ready to charge in head - first, while Fem Shu would be thinking of a strategic plan. Their different personalities would create some interesting dynamics as they work together to save their beloved Beyblades and in the process, become closer friends.
Maybe Valt loses his memory after a particularly intense Beyblade battle. Shu then has to work hard to help Valt remember their friendship and their shared experiences in the Beyblade world. This could lead to a whole new dynamic in their relationship as Shu is desperate to bring back the old Valt.
A simple plot could be that Valt and Chris Lemon enter a local beyblade competition. Valt is excited to show off his new moves, while Chris Lemon is more focused on winning the grand prize. During the tournament, they face various opponents and start to respect each other's skills more. In the end, they might even battle each other in the finals, with the winner being determined by a very close match.
A prevalent theme is also the idea of redemption. In some fanfictions, if Shu has gone through some tough times or made mistakes, Valt is often the one to bring him back, and this journey of redemption is intertwined with their relationship development. Also, there are fanfictions that focus on the power of their bond. How their connection gives them an extra boost in their Beyblade battles, not just physically but also mentally, and this bond then blossoms into a romantic relationship.
One possible fanfiction could be about Valt and Chris Lemon teaming up for a special beyblade tournament. They might start off as rivals, with Valt's energetic and passionate style clashing with Chris Lemon's more calculated approach. As the story progresses, they learn from each other and combine their strengths to face a powerful common enemy in the tournament.
The plot could be a time - travel adventure. Wakiya and Shu are sent back in time to the early days of beyblade. They have to work together to find a way back to their own time while also influencing the development of beyblade in the past. This would be filled with interesting encounters with the old - school bladers and a lot of action as they try to preserve the future of beyblade.
You can try fanfiction platforms like Archive of Our Own (AO3) or FanFiction.net. There are often many dedicated Beyblade Burst fans who write about Shu x Valt on these sites. Just use the search function and type in 'Beyblade Burst Shu x Valt' and you'll likely get a list of relevant fanfictions.