when i was 10 omoi wo noto ni shirushi hajime ta
kanashimi nayami mosubete (i wrote down everything)
when i was 12 tonikaku yononaka ni ikatte ta
dareka ni sakebi wo kii te hoshi katta want you to understand

when i was 13 yume hamousugu teno todoku tokoroniatta hisshi datta
when i was 14 ironna monowo gisei nishitakedosorede zenzen yokatta

nando tonaku nagashi ta namida mo
sugi sare basorehasorehasubeteii omoide
otona no kaidan wo mune hatte nobotte ru
(good-bye 10 dai )
oh good-bye my teenage

when i was 15 kazoku to hanare tehitoride
yume te wo tsukamu tameni iki te iku to kime ta
when i was 16 umakuikikakete dame ninarikaketanowo oboe teru
ano toki watashi kitto ochi tetara owari dattakamotte omotte ru

when i was 17 sukoshi zutsusubeteumakuitteiruyouna mainichi and i've been happy
when i was 18 nagai kan watashi ga hoshi kattanohakoredatte kanji teta yoake

nando tonaku nagashi ta namida mo
sugi sare basorehasorehasubeteii omoide
otona no kaidan wo mune hatte nobotte ru
(good-bye 10 dai )
oh good-bye my teenage

oh and i am 19 mou 10 dai ga owa ru
naritakatta tei^n ninareterutte
mune wo hatte ie ru
good-bye good-bye my teenage

nando tonaku nagashi ta namida mo
sugi sare basorehasorehasubeteii omoide
otona no kaidan wo mune hatte nobotte ru
(good-bye 10 dai )
oh good-bye my teenage