Ral has a symbiotic relationship with Grad, a legendary shadow with the form of a giant blue dragon.

However, when a young boy by the name of Ral becomes friends with the shadow inside him, he may be the last hope in saving the world.

With the aid of his shadow, a large blue dragon named Grad, and his teacher, Mio, Ral can take on any challenger.

[9][10] In Germany, Tokyopop began publication in October 2007 under the title Blue Dragon RalΩGrad, a spelling mandated by the licensing contract with Shueisha.

[11] Dominic Nguyen of Newtype USA wrote: "What readers will appreciate most about Ral Ω Grad is the supporting cast, which largely consists of attractive young girls.