Yen Press

is a manga and light novel imprint co-owned by and the. Yen Press acquired the official English-language release license for the Toaru Majutsu no Index light novels in April 2014, and began releasing them in English in late 2014, under the translated title A Certain Magical Index.

History
Yen Press was founded in 2006 by Kurt Hassler and Rich Johnson.

Light Novel

 * A Certain Magical Index (2014-2020)
 * A Certain Magical Index SS (2020-2021)
 * A Certain Magical Index: The Old Testament Omnibus Edition (2023)
 * A Certain Magical Index NT (2023-)

Manga

 * A Certain Magical Index (2015-Present)