Mamoru the Shadow Protector

Kage Kara Mamoru! (陰からマモル, lit. "Mamoru from the Shadows", or "I Will Protect You from the Shadows") is a series of light novels written by Achi Taro. The light novels had ended in March 2008 with the release of Volume 12, but as of July 2009, a new series entitled '''Motto! Kage Kara Mamoru!''' (もっと!陰からマモル!, lit. "More! Mamoru the Shadow") has started serialization. It features manga and anime adaptations.

Plot
In times gone past there was a Lord, one who loved Konnyaku. He loved it so much that he ordered his ninjas to protect the family of the finest Konnyaku makers in his land. The protection of the family continues even to today, Mamo-kun, youngest of the ninja family protects the innocent and naive Yuuna from sinister forces, though more often from herself.