The official website for the television anime of the A Certain Scientific Accelerator ( Toaru Majutsu no Index Gaiden: Toaru Kagaku no Accelerator ) manga revealed on Friday that the anime will have 12 episodes. The anime's Japanese Blu-ray Disc and DVD home video releases will have three volumes on October 30, December 25, and February 28.

The anime will premiere on AT-X at 10:00 p.m. on July 12, and it will also run on the Tokyo MX , MBS , and BS11 channels, as well as on the AbemaTV service that night.

Nobuharu Kamanaka ( Big Order ) is directing the anime at J.C. Staff . Kenji Sugihara ( Clockwork Planet , Shiki ) is in charge of series composition. Yohei Yaegashi ( Tsūjō Kōgeki ga Zentai Kōgeki de Ni-kai Kōgeki no Okā-san wa Suki desu ka? , Aki no Kanade ) is designing the characters. Jin Aketagawa ( Children of the Whales , anohana ) is sound director, and Maiko Iuchi ( A Certain Magical Index , A Certain Scientific Railgun ) is returning to compose the music. THE SIXTH LIE are performing the opening theme song "Shadow is the Light," and sajou no hana are performing the ending theme song "Parole."