Based on the provided source material, there is no information available regarding a city named Anjo in the Aichi region of Japan. The source identifies "Anjo" exclusively as a given name with origins in Portuguese meaning "angel." The documentation lists several notable individuals who share this name, including German rugby union player Anjo Buckman and Filipino athletes and entertainers such as Anjo Caram, Anjo Damiles, Anjo Yllana, and Anjo Sarnate. It also mentions Japanese professional wrestler and mixed martial artist Yoji Anjo.