Song - Grow Slowly Composer - Sho Watanabe Performer(s) - Yuka Iguchi Album - Grow Slowly / Yuka Iguchi Released - May 15, 2013 Anime - Toaru Kagaku no Railgun S Publisher - Warner Home Video Anime Playlist: https://youtube.com/playlist?list=PLaG_BJIwxL6iyhbhqebSZ_1uDfwQ4US_H&si=y5aqXpHcNfiN601v LYRICS: Shiranai sora nagame nagara itsumo itsumo kimi to aruite Kinou made to wa chigau mirai mieta you na ki ga shite Sagashitanda Boyaketeita shikai ni wa mayotteiru to omoikondeita Kokoro furetara subete kawatte iku Akiru kurai kumo kazoetara mata tooku ni nagarete itta Oikakete mitsuketa yo ashita no yume Nido to konai ima tashikamete tsutawatta Kimi no omoi Itsuka kitto watashi mo ageyou Kumo no you ni sotto sotto Doko made mo zutto zutto mae he Source(s): VGMdb, Toaru Majutsu no Index Wiki