I also like 'Astral's Guidance for Yuma'. It shows how Astral helps Yuma not only in dueling but also in his personal growth. The fanfic focuses on their evolving relationship, from a simple partnership in duels to a more spiritual and emotional bond that enriches both of their lives.
There's 'Yuma and Astral's Adventure'. In this fanfic, they embark on a journey through different dimensions. The author does an amazing job of depicting their unique personalities and how they complement each other. Their interactions are full of humor and moments of deep emotional connection, making it a really engaging fanfic.
One great yuma x astral fanfic is 'The Bond Beyond Dueling'. It beautifully explores their relationship as they face challenges together in the dueling world. The story delves deep into their mutual understanding and the growth of their friendship, which gradually takes on a more profound connection. It's a heartwarming read for fans of the pair.