Watch Hani Hani: Operation Sanctuary

This show is about the story of a young boy named Naoki Kuzumi, who is a high school student that has lost his parents in a car accident several years ago. After the accident, he was sent to live with his aunt, uncle and his cousin named Matsuri. One day, he meets a young redhaired girl named Mikoto, who falls for the sky. However, she believes that Naoki is really her younger brother. After his strange encounter with Mikoto, Mikoto reveals to Naoko that she is a time traveler that had traveled back to Naoki's time.