Beet the Vandel Buster Excellion

The story takes place in the dark century, where the devil Vandel rules with the power to control monsters. The Vandel Busters, a group of hunters, seek to defeat these devils, with the Zenon Squad being the most skilled on the continent. Beet, a young boy, aspires to join the Zenon Squad, but after a defeat at the hands of Beltose, the five surviving members of the Squad pass on their life energy-infused weapons, the Saiga, to Beet. Beet now carries on the Zenon Squad's mission to end the dark century.