Guardian Ninja Mamoru

Mamoru Kagemori is an unassuming boy with a disheveled appearance and thick glasses, but he has a hidden heritage as the son of a long-standing ninja family. His family has secretly protected the Konnyaku family for 400 years, and Mamoru has been personally responsible for safeguarding their daughter, Yuuna Konnyaku, since their kindergarten days. Whenever Yuuna is in a difficult situation, Mamoru transforms into a skilled ninja, donning a suit and intervening to help her.