Following some explosive improv from Gunha, the Daihasei Festival begins with a three-legged race, with Mitsuko KongÅ pairing up with Mikoto in place of the injured Kuroko Shirai. While Mikoto goes to change her outfit after winning her race, Misaka 10032 is mistaken for Mikoto and brought to take part in Tokiwadai's next event, Balloon Hunter, where someone has his sights set on her.