natsu ga kita hora taiyou no kisetsu ga
natsu ga kita hora eien no kisetsu ga
kimi ga iru kara boku wa waraeteru
kimi ga iru kara natsu ga atsuku naru

sanzan waratte naitara sanman MAIRU no kyori kara demo
"SANKYUU" ga todokesou sa, kakeyou SUMMER
dandan omoide ni kawaru FURASSHUBAKKU bakari no mainichi demo
"SANKYUU" shika ienasou da, kakeyou SUMMER FRIEND

yakyuu, BASUKE, SAKKAA, suiei kara rikujou
koi ni koi shite GITAA motte ROKKU shite
koukai wa iya da namida chiratsuitemo
kanousei wa sousa hateshi ga nai no sa

sanzan waratte naitara sanman MAIRU no kyori kara demo
"SANKYUU" ga todokesou sa, kakeyou SUMMER
dandan omoide ni kawaru FURASSHUBAKKU bakari no mainichi demo
"SANKYUU" shika ienasou da, kakeyou SUMMER FRIEND

boku ni totte no juunana-sai no natsu ga
boku ni totte no eien ni natteiru you ni
kimi ni totte no kotoshi no kono natsu ga
kimi ni totte... eien ni nare

sanzan waratte naitara sanman MAIRU no kyori kara demo
"SANKYUU" ga todokesou sa, kakeyou SUMMER
dandan omoide ni kawaru FURASSHUBAKKU bakari no mainichi demo
"SANKYUU" shika ienasou da, kakeyou SUMMER
eien da nante uso dato sanzan waratta ano hi ni
mou kaerenai kara tokidoki sa, negau yo SUMMERDAYS

natsu ga kita hora taiyou no kisetsu ga
natsu ga kita hora eien no kisetsu ga
kimi ga iru kara boku wa waraeteru
kimi ga iru kara natsu ga atsuku naru

sanzan waratte naitara sanman MAIRU no kyori kara demo...
dandan omoide ni kawaru FURASSHUBAKKU bakari no mainichi demo... demo...
todoku kara "SANKYUU" SUMMER DAYS