A certain evolution (season 1 build up)

Academy city, the world's most advanced place on earth, where 80% are students that are trained to become espers, people with supernatural psychic powers, filled with secret conspiracies, and experiments, to Misaka also known as the railgun this is nothing new... she faced it her whole life.

For Touma his life has been filled with nothing but bad luck, thanks to a hand that stops the supernatural including his luck, living in a city based on science, he discovers Index, a girl running from a magic cabal. Magic and science, two opposing sides are beginning to collide, but not before something else enters the equation.

As these sides collide, a new element is at play, that no one expected as to both Touma and Misaka, everything is about to change... and it all started when they found Alex, a boy in academy city without any identification or much memory of his past, holding a strange box.

Alex is sent into the middle of this conflict, with powers neither esper nor magic, he builds up his name.