Shinyaku Toaru Majutsu no Index Light Novel Volume 15

Shinyaku Toaru Majutsu no Index Light Novel Volume 15 is the fifteenth installment of the Shinyaku Toaru Majutsu no Index light novel series, to be released on April 10, 2016.

Publisher's Summary
At the end of a night of fierce fighting, the two people whose fate is tied with their "right hand", Kamijou Touma and Kamisato Kakeru, exchange glares with each other, menu on one hand, in a school cafeteria!? Meanwhile, a half-naked girl on a raincoat appears in the city. This girl in fact a little sister that even Kamisato is afraid of...!?