Saikou ni saitei na sonna toki mo
Zettai ni zetsumei na sonna hi demo
Ashita wa kyou yori takaku toberu sonna ki ga shita kara
Tada nanzenkai demo ganbaru n da

Itsumo sumairu sumairu!
Sou sumairu sumairu!
Kyou mo gubbai arigatou
Konai ashita nante nai
Dakara sumairu sumairu!
Zutto sumairu sumairu!
Shinpai wa iranai yo
Zenbu kitto umaku iku hazu sa

Are mo shitai kore mo shitai jikan taranai
Asettemo nageitemo purasu mo nai
Dakara mae mite susumu shika nai ippo zutsu fumishime
Sou nanmankai demo tachimukau n da

Misete sumairu sumairu!
Saa sumairu sumairu!
Kyou mo ippai yasashisa wo
Yamanai ame nante nai
Dakara sumairu sumairu!
Motto sumairu sumairu!
Mou nakanakute ii yo
Zenbu kitto umaku iku hazu sa

Kokoro ni te wo atete goran
Fukaku fukaku shinkokyuu shite
Yukkuri me wo tojite goran
Hiroi hiroi uchuu no naka
Jibun de tsukutta sekai tobidashite miyou
Hitomi wo hirakereba taiyou ga warau

Itsumo sumairu sumairu!
Sou sumairu sumairu!
Kyou mo gubbai arigatou
Konai ashita nante nai
Dakara sumairu sumairu!
Zutto sumairu sumairu!
Shinpai wa iranai yo
Zenbu kitto umaku iku hazu sa