乙女の秘密　ドキドキしてる
やさしい秘密　ポプラ並木に
キラキラリ　揺れている

心の中に　風が吹くたび
乙女の頬は　燃えてゆくのよ
ひやかすのは　やめて下さい

可愛いすぎるね　サマータイム
人差し指で空にね　「好き」と書いた

乙女の秘密　ソワソワしてる
嬉しい秘密　雲の隙間に
キラキラリと　揺れてるんです

暑中お見舞い　時計台の絵
メールじゃなくて　どう思うかな？
針がほら　重なってスウィート＆キス

刹那すぎるね　サマータイム
躊躇（ためら）いながら　ケイタイ　握りしめた

誰にも内緒　ドキドキしてる
特別な夏　忘れないはず
キラキラリと　揺れて光ってる

夕暮れ時　ひとり　もの想いはブルー
どうぞ　此処で　ここで　抱きしめて欲しいの

自撮りの写真　取り込んで有る
コラージュしたの　あなた右側
恋人たち？ tu,tu,tu　ダーリンかもね？ tu.tu.tu
甘い夢を見せて　サマータイム

Otome no himitsu DOKIDOKI shiteru
Yasashii himitsu POPURA namiki ni
KIRAKIRARI [Ts/Ya/In] yureteiru

Kokoro no naka ni kaze ga fuku tabi
Otome no hoho wa moete yuku no yo
Hiyakasu no wa [Ts/Ya/In] yamete kudasai

Kawaisugiru ne SAMAA TAIMU
Hitosashiyubi de sora ni ne "Suki" to kaita

Otome no himitsu SOWASOWA shiteru
Ureshii himitsu kumo no sukima ni
KIRAKIRARI to [Ts/Ya/In] yureterundesu

Shochuu omimai tokeidai no e
MEERU ja nakute dou omou ka na?
Hari ga hora [Ts/Ya/In] kasanatte SUWIITO & KISU

Setsunasugiru ne SAMAA TAIMU
Tamerainagara KEITAI nigirishimeta

Dare ni mo naisho DOKIDOKI shiteru
Tokubetsu na natsu wasurenai hazu
KIRAKIRARI to [Ts/Ya/In] yurete hikatteru

Yuuguredoki hitori monoomoi wa BURUU
Douzo koko de koko de dakishimete hoshii no

Jidori no shashin torikonde aru
KORAAJU shita no anata migigawa
Koibitotachi? [Ts/Ya/In] tu,tu,tu DAARIN kamo ne? [Ts/Ya/In] tu.tu.tu
Amai yume wo misete SAMAA TAIMU

A girl's secret, my heart beats quickly
This gentle secret, in a row of poplar trees
Sparkles and wavers

Every time a wind blows through her heart
A girl's cheeks flare up red
Please stop teasing me about it

It's just too cute, isn't it? Summertime
With my index finger, I wrote "I love you" in the sky

A girl's secret, I feel so nervous
This happy secret, in between the clouds
Is wavering in a sparkly way

For my summer's greeting, I'll send you a picture of the Sapporo Clock Tower
It's not a text, so I wonder what you'll think
Look, the clock's hands are overlapping, sweet & kiss

It's so fleeting, isn't it? Summertime
While I hesitated, I gripped my phone

A secret from everyone else, my heart beats quickly
A special summer that I shouldn't forget
Wavers and shines in a sparkly way

Alone at twilight, my musings are so blue
By all means, here, here, I want you to hold me

I've retrieved all of the selfies we took
I made a college, you're on the right-hand side
Are we sweethearts? (Tu, tu, tu) Maybe you're my darling? (Tu, tu, tu)
I show you this sweet dream, summertime