Kage kara Mamoru!
English title: Guardian Ninja Mamoru
Japanese title: 陰からマモル！
Type: TV
Episodes: 12
Premiered: winter 2006
Source: Light novel
Genres: Comedy, Romance
Studios: Group TAC
Producers: Aniplex, Studio Tulip, Tohokushinsha Film Corporation
Duration: 24 min per ep
Rating: PG-13 - Teens 13 or older

Kagemori Mamoru is a dowdy boy whose hair is disheveled and who wears thick glasses, but he is actually the son of a ninja family. They have protected their neighbors, the Konnyaku family, secretly for 400 years. Mamoru has personally protected their daughter, Konnyaku Yuuna, since they were in kindergarten. When Yuuna is in trouble, Mamoru puts on ninja suit and turns into a competent ninja to help her.