R-Shitei - (Bye Bye) バイバイ。

kimi ni shika tokenai mono ga aru to shita nara sore wa nan deshou ka?
rikutsu to ka? hitsuzen to ka? boku wa wakaranakute
akiramete sugosu mainichi wa tada kanashikute tada munashiku natta
ikiru to ka kietai to ka sonna…