Diverging from the plot of Index, Toaru Kagaku no Railgun focuses more on Academy City and the third of seven Level 5 espers named Misaka Mikoto. Misaka Mikoto, despite being part of the most powerful espers in Academy City, also has a more carefree side to her life. She has to fend off constant "love attacks" from devoted friend and roommate Shirai Kuroko but despite of being the Ace of Tokiwadai Middle School she still acts like a normal student as in nobody is better than the other. However, with various problems arising in Academy City — both noticeable and out from plain sight — she moves as Academy City's unseen savior, using her powers to save people, loved ones and strangers alike.