Jellyfish

jellyfish is a special insert song played near the end of Episode 23 of the Toaru Majutsu no Index anime. It was played during the encounter and ensuing battle between Index and Sherry Cromwell's golem Ellis. The song was composed and sung by Kawada Mami; music was done by Tomoyuki Nakazawa, who also provided the arrangement along with Takeshi Ozaki. The song is part of the masterpiece single release.