Dear Shadow
Marumaro finds himself in hot water when he flirts with the innkeeper's wife, and he's in even deeper trouble when it turns out the innkeeper is a Shadow Wielder who deserted Gran Kingdom's army with the "wife" being his shadow. They soon learn that Marumaro isn't from Gran Kingdom. Marumaro and Saber Tiger later defend them from a Gran Kingdom captain and his troops with the innkeeper on his bounty list. Marumaro and Saber Tiger defeat them and they reunite with Shu and the others.
Aired 04/08/2007EP 18 - Dear Shadow

Blue Dragon
As Shu's village was being attacked by an unknown enemy, he and his friends, Jiro and Kluke decide to defend their home. They soon meet warrior Zola and receive the powers of Shadow, an ability that let's them transform their shadow into a powerful monster. Shu receives one of the most powerful monsters, Blue Dragon, and they all set out to defeat their enemy.
(Source: Anime News Network)