This is a pretty decent anime. You have this boy ninja who has to protect his neighbor (a clumsy, childish, loving girl who he grew up with) because of this promise made by his family a long time ago. He first appears nerdy but when he has to fulfill his duty he turns into this nice looking serious ninja. The story pretty much revolves around his duty to protect his childhood friend/neighbor. Throughout this process, they (main character and other characters) face new challenges, meet new friends, and feelings grow. So all in all it was good filled with some comedy, a touch of romance,and ninja action. Quite enjoyable and not over the top. You can pretty much telll how the story will evolve as you watch each episode so its kinda predictable. This anime gets a 9.