Rokurou no Daibouken

Twelve amulets that protect the world are shattered, spreading a curse wherever their fragments reach. For reasons nobody understands, Rokuro is the only person untouched by the curse, so he sets out with his older brother Goro and younger sister Nanako to recover the pieces and save their family. A hermit gives Rokuro a magical brush to confront the dangers waiting along the way, but finding the amulets also means discovering who broke them and why Rokuro alone was left free of their influence.