OniAi , is a Japanese light novel series written by Daisuke Suzuki, with illustrations by Gekka Urū. The series is published by Media Factory since December 2010 and ended on January 25, 2019 with a total of 12 volumes released. There are two manga adaptation series, both were serialized in Media Factory's Monthly Comic Alive magazine. An anime adaptation produced by Silver Link aired in Japan from October 5 to December 21, 2012.

Minori Chihara is a Japanese voice actress and former singer who has had roles in several anime series. She is well known for her voice role as Yuki Nagato in The Melancholy of Haruhi Suzumiya and Leon in The iDOLM@STER, while in her musical career, she has been signed under King Records and Lantis. She was born in the city of Utsunomiya, Tochigi and was raised in Saitama. She was affiliated with the talent agency HoriPro International.