Lyrics:

[Verse 1]
Ameagari no niji mo
Rin to saita hana mo
Irozuki afuredasu
Akaneiro no sora aogu kimi ni
Ano hi koi ni ochita

[Pre-Chorus]
Shunkan no doramachikku
Firumu no naka no hitokoma mo
Kienai yo kokoro ni kizamu kara

[Chorus]
Kimi da yo kimi nanda yo
Oshiete kureta
Kurayami mo hikaru nara
Hoshizora ni naru
Kanashimi mo egao ni
Mou kakusanai de
Kirameku donna hoshi mo
Kimi wo terasu kara

[Verse 2]
Nemuri mo wasurete mukaeta asahi ga
Yatara to tsukisasaru
Teikiatsu hakobu zutsuu datte
Wasureru kimi ni aeba

[Pre-Chorus]
Seijaku wa romantikku
Koucha ni toketa shugaa no you ni
Zenshin ni meguru yo kimi no koe

[Chorus]
Kimi da yo kimi nanda yo
Egao wo kureta
Namida mo hikaru nara
Ryuusei ni naru
Kizutsuita sono te wo
Mou hanasanai de
Negai wo kometa sora ni
Ashita ga kuru kara

[Verse 3]
Michibiite kureta hikari wa kimi da yo
Tsurarete boku mo hashiridashita
Shiranu ma ni kurosu shihajimeta
Hora ima da koko de hikaru nara

[Bridge]
Kimi da yo kimi nanda yo
Oshiete kureta
Kurayami wa owaru kara

[Chorus]
Kimi da yo kimi nanda yo
Oshiete kureta
Kurayami mo hikaru nara
Hoshizora ni naru
Kanashimi wo egao ni
Mou kakusanai de
Kirameku donna hoshi mo
Kimi wo terasu kara

[Post-Chrous]
Kotae wa itsudemo guuzen? Hitsuzen?
Itsuka eranda michi koso unmei ni naru
Nigirishimeta sono kibou mo fuan mo
Kitto futari wo ugokasu hikari ni naru kara