- Nioki City is a fictional city that appears in the manga and anime series "Nioki no Himegoto" by Rin Asano. The story follows the life of a high school girl named Akihime Nioki who lives in Nioki City, a city with advanced technology and a unique school system. The city is known for its bustling streets, towering skyscrapers, and modern infrastructure. It serves as the backdrop for the various adventures and challenges that Akihime and her friends face throughout the series.