Some fanfictions may also explore a bit of rivalry. Even though they are friends, there could be a healthy competitive side to their relationship. This can add an interesting dynamic to the stories, with them constantly trying to outdo each other in Beyblade battles, but still maintaining their bond of friendship.
A good plot could be Yu and Kenta teaming up to face a powerful and mysterious new blader. They train together, overcome their individual weaknesses, and in the process, their friendship deepens.
You can try searching on fanfiction websites like FanFiction.net or Archive of Our Own. Just type in 'beyblade yu x kenta' in the search bar and see what comes up.
I'm not sure specifically about a 'beyblade kenta gay fanfic'. Fanfics can cover a wide range of themes and relationships, but not all are easy to find. You could try searching on fanfic platforms, but keep in mind that the Beyblade fandom might not have a large number of such specific fanfics.
Finding a 'beyblade kenta gay fanfic' can be a bit of a challenge. First, try the major fanfic platforms. AO3 has a good tagging system, so if there are any fanfics with this theme, they might be tagged appropriately. Also, check out Beyblade - related fan communities on social media platforms. Sometimes, fans share their fanfics there or can point you in the right direction. But it's not certain that you'll find exactly what you're looking for right away.
Love and loyalty are important themes too. As the story progresses, there can be a romantic undertone between Yu and the reader. Their loyalty to each other, whether it's in the face of tough opponents or difficult situations, is emphasized. And often, there's a theme of growth, both in their personal lives and as beyblade players.
A popular one is 'Yu and the Reader: Beyblade Bond'. It focuses on the strong bond that forms between Yu and the reader through their shared love for beyblades. The story has exciting beyblade battles and some heart - warming scenes where they support each other during tough times.
The OC could be a healer in the blading world. Ryuga gets seriously injured during a battle. The OC takes care of him and during his recovery, they start to bond. Ryuga, who is usually so tough and independent, finds himself relying on the OC. This newfound closeness makes him question his own feelings. They could then go on a journey together to find a rare blading item, with their relationship evolving along the way.
One of the common themes is rivalry. Since they are both involved in the same kind of activities, their competitive nature towards each other is often depicted. Also, the theme of mentorship can be seen sometimes, with Ryuga being a sort of mentor to Kenta in some fanfictions.