Set to be released on 2013-02-23 (Japan), with the original story written oleh the light novel penulis himself, Kazuma Kamachi and original character desain oleh the light novel illustrator, Kiyotaka Haimura.
This is the final part of Touma fighting Accelerator with the help of Misaka and her "sister". Touma fortunately succeeds in beating Accelerator and ends his reputation as the strongest esper in Academy City.
Here we see Misaka as Touma's cousin, Index as Touma's mom and everyone all akting like they're somebody else. Just look at how Touma reacts to it! ^_^