以下是《Only My Railgun》的羅馬音歌詞：
Only my railgun
Sono tenshi tai nioi ga kizuita koto
tsubureta kono te wo fukarete mo
boku ga hikari ni nari sora o kakeru dake
machigau hibi no naka ni ai ga umare
hakanaku tsuyoku te wo tsukaeru
shinjitsu ga atta ikanai yo
Tsunagu machi no soto ni mieru kimi no koe ga
bokura no jibun o sasageru no deshou
Tsuyoku tsuyoku chikazukete yuku
kono koe ga kimi ni aitai
Tsuyoku tsuyoku chikazukete yuku
kono koe ga kimi ni aitai
Only my railgun
kono mune o tsukaeru dake o
kizuite yuku dake o shinjite
kono te ni ikitai dake o shinjite
kono koe ga kimi ni aitai
Sono tenshi tai nioi ga kizuita koto
tsubureta kono te wo fukarete mo
tatoeba mirai ga shinji ta imo o doumo hanasanai?
itsuha "Ai wa koware mo shinai" de tsuyoku tsuzukete...
boku no subete o sukoshi dake chikauyo? chikauyo?... chikauyo?...tsukiri shite yuku yo...oidete mieru koe o
Kimi to nara jibun ga kakurete ikenai to shinjite...itoideshita deshou? Ore wa kimi no "Subete ga warau no" ni sasenai tsuyoku te...! Kimi to... Only my railgun!... Only my railgun!... Only my railgun!... Only my railgun!... Only my railgun!... Only my railgun!... Only my railgun!... Only my railgun!... Ore wa kimi no "Subete ga warau no" ni sasenai...! Kimi to... Only my railgun!... Only my railgun!... Only my railgun!... Only my railgun!... Only my railgun!... Only my railgun!... Only my Railgun!... Ore wa kimi no "Subete ga warau no" ni sasenai yo.
以上就是《Only My Railgun》的羅馬音歌詞。