One possible fanfiction could be about Wakiya and Shu forming an unexpected alliance. They might start off as rivals but then find common ground in their love for beyblade. For example, they could team up to face a stronger opponent that neither could defeat alone. This would involve them learning to trust each other and combining their unique skills.
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.
I'm not entirely sure about the specific details of the 'beyblade burst shu love story' as there could be various fan - made or niche interpretations. It might involve Shu's journey in the Beyblade world while also experiencing a romantic relationship with another character, perhaps a fellow blader or someone he meets along his adventures.
Well, obviously Shu is one of the main characters. And there must be another character, perhaps a female character who is involved in the love story with Shu, but without more specific information, it's hard to name exactly who that could be.
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.
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.
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.
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.