Toaru Kagaku no Railgun: Misaka-san wa Ima Chuumoku no Mato Desukara

とある科学の超電磁砲 御坂さんはいま注目の的ですから

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.