Yakusoku Train (約束train)

Eki no HOOMU ni wa setsunage na yuuhi
Kaban mo omotai
Nee, kaeri takunai ne...
Yakusoku shiyou! Tsugi no koto
Koyubi to koyubi musunda
"Koko" ni namae wo tsukeyou ka?
Kimi to boku no shihatsueki
Mata ne kitto... kanarazu!
Senaka awase furimukanai yo
Soshite yakusoku train
Hashiri dashita "kimi eki" made yukou
Hoshi to hoshi tsunagu ano seiza no you ni
Bokura no tabi ni mo takusan no imi ga aru
Yakusoku shitara kanjita no
Koyubi to koyubi no kizuna
Kakueki teisha tsumuide ikou
Kimi to boku no SHINARIO de
Ashita... motto mirai he
Omoide wo kasanete koeyou
Toki ni yakusoku train
Mawarimichi mo bokura no chizu rashii
Yakusoku shiyou! Tsugi no koto
Koyubi to koyubi musunda
Koko wa shuuchakueki ja nai
Kimi to boku no tsuukaten
Mata ne kitto... kanarazu!
Nando datte tabi ni deru no sa
Itsumo yakusoku train
Kokoro no naka hashiri tsudzuketeru yo
Soshite tsugi wa "bokura eki" de aou!