Text: After six years, a second season, titled Blue Exorcist: Kyoto Saga, was announced in June 2016 and premiered on January 7, 2017. Koichi Hatsumi directed the sequel, while Toshiya Ono wrote the scripts, Keigo Sasaki designed the characters, and Hiroyuki Sawano and Kohta Yamamoto composed the series' soundtrack. A-1 Pictures returned to produce the animation. It was also announced that there would be five new characters in the sequel. The opening theme song was ''Itteki no Eikyo'' (, lit. ''Drop's Influence'') by Uverworld, while the ending theme song was ''Kono Te de'' (, lit. ''With This Hand'') by Rin Akatsuki.

Question: is ao no exorcist season 2 a sequel?
yes