Romanji:

Sayonara　Kimi wo [bad word] mainichi ga
Atemonaku manatsu no [bad word] ni tokete yuku

Kimi to [bad word] keyaki namiki no [bad word] Natsu no [bad word] kazatta kawazoi no hanabi

Shuumatsu ni nareba　Nigiwau a-ke-do
Hanarete shimawanu you ni　Te wo tsunaide [bad word] 
Tashika ni kono machi de kasaneta
Futari dake no jikan　Futari dake no sekai

Sayonara　Kimi wo [bad word] mainichi ga
Atemonaku manatsu no [bad word] ni tokete yuku
Sayonara　Koboreta namida kawaku koro
Mata kimi no egao wo omoidasu

Oto mo naku sotto sora kara maiochita
Shiroi nukumori ga mata te no hira ni toketa

Itsuka no futari de nagameta
Hora　Kono machi no keshiki mo sukoshizutsu kawatteku

Sayonara　Kimi wo [bad word] mainichi ga
Atemonaku yuugure no naka tokete yuku
Sayonara　Yasashii kaze ni [bad word] wa
Ano toki no mirai wo omoidasu

Kotoba ni [bad word] nara zenbu　Koborete shimaisou dakara
Itsuka no yakusoku wa ima mo yakusoku no mama

Sayonara　Kimi wo [bad word] mainichi ga
Atemonaku manatsu no [bad word] ni tokete yuku
Sayonara　Koboreta namida kawaku koro
Mata kimi no egao wo omoidasu
 [bad word] Bye-bye

English:

Good-bye to the days I loved you
At random, they melt away into the midsummer night

I walked with you under a row of keyaki trees
The summer night was decorated by riverside fireworks

When the [bad word]  the shopping arcade gets busy
So that we wouldn't get separated, we walked holding hands

We certainly did spend a lot of time in this city
Alone together　In a world just for the two of us

Good-bye to the days I loved you
At random, they melt away into the midsummer night
Good-bye　Around the time my tears dry
I'll remember your smile again

The white warmth that gently fluttered down without a sound
Melted away in the palm of my hand again

The scenery of the city that we gazed at once
Look, it's changing bit by bit

Good-bye to the days I loved you
At random, they fall apart in the twilight
Good-bye　When a gentle wind blows
I'll remember the future we looked to back then

If I put it into words, it seems like everything [bad word] pouring out
So I'll leave the promises of those days as promises now

Good-bye to the days I loved you
At random, they melt away into the midsummer night
Good-bye　Around the time my tears dry
I'll remember your smile again

I love you　Bye-bye

Credit: [bad word]