A Certain Scientific Railgun

Mikoto recalls in a dream of how, when she was younger, she was approached by scientists wanting to use her DNA map to help cure Duchenne muscular dystrophy. The next day, Kuroko tries to take Mikoto through an alleyway to get to the mall, only to find it filled with people. They discover this is due to someone hiding envelopes containing money cards within the alleyways, piquing people's curiosity to search for them. After running into Ruiko, who is also on the hunt for the money cards, Mikoto overhears some SkillOuts who have managed to locate the source of the envelopes and decides to follow them. Meanwhile, Ruiko grows curious as she allegedly seen Mikoto at the mall, despite Mikoto never actually getting there, with Mii explaining to Kazari about a rumor of there being clones of her. The SkillOuts eventually trace the envelopes back to a Nagatenjouki Academy student named Shinobu Nunotaba, demanding she hand over the other envelopes. Things get tense, however, when it appears the SkillOuts are getting killed off one by one, which she claims to be an ability called "Critical" that allows her freely kill anyone she's touched. As Mikoto arrives on the scene, where the SkillOuts hadn't really been killed but were instead brought to the height of their fear and knocked out with a paper fan, Shinobu refers to her as 'the original'.