Buster Keel

Buster Keel (バスターキール!) is a Japanese manga series by Sakamoto Kenshirou. It has been serialized in Shonen Rival, 2008 and has been published by Kodansha in 7 tankōbon volumes.

Keel is looking desperately for Siva, to retrieve something precious that he took away from him. On his search he joins a beginner monster fighter girl, Lavi, along with her flying pig monster, and goes for an adventure to find Siva.