Watch Toaru Kagaku no Accelerator: Tobidase Ippou-san - Hachamecha Kaishingeki Online

Continuing after the Level Upper incident, another phenomenon torments Misaka. A phenomenon called "Someone's Watching," its effect feels like the electricity in one's body flow backwards. With the help of her friends, Misaka fights against the unknown enemy.

Third season of Toaru Kagaku no 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. In this city full of super-powered gangs, mad scientists, and monsters—there’s no shortage of action!

Toaru Kagaku no Railgun S OVA

The second season is focused on The Sisters Arc. Lasting only a single volume in the Toaru Majutsu no Index light novels, it was later expanded greatly in the Toaru Kagaku no Railgun manga. The arc focuses on the ordeals of Mikoto Misaka after discovering the existence of the Radio Noise sisters that are being used in the Level 6 Shift, an experiment where they are killed in order for the highest-ranking Level 5, Accelerator, to achieve Level 6.

Academy City is a highly developed place in terms of technology. It is said to be 20 to 30 years ahead of the rest of the world, and 80% of its 2.3 million residents are students. The focus of studies here is directed towards esper powers. Misaka Mikoto, one of the top level espers in town, shares a room with Kuroko Shirai, another high level esper who is a member of Judgement, a law enforcing agency composed of students. Both attend Tokiwadai, a private school reserved for the high-leveled and the rich. Kuroko's partner at Judgement, Kazari Uiharu, is a low level esper who studies at Sakugawa middle school. Her best friend and classmate there is Ruiko Saten, a level zero, one who has no esper powers. Together, the four encounter several adventures in the exciting scientific town.