A certain scientific railgun

"Misaka's electro-manipulation abilities and delightfully destructive railgun projectile move make her a rock star in Academy City. The techno metropolis is packed with supernaturally powered students known as espers, including Misaka's flirty friend and roommate, Kuroko. She uses her teleportation skills as a member of the judgment law enforcement team, fighting crime alongside her fellow agent Uiharu. Joined by their friend Saten, a spunky level 0 esper, Misaka, Kuroko and Uiharu have a blast taking on danger whenever and wherever it arises"--Container.