saigo no hanabi yurete ochita
yuugure kaerimichi
namida sakki kara [bad word] 
chiisaku kata yose [bad word] 
nagusametekureta saigo made
 [bad word] hazu mo nai kuse ni demo
yasashisa wo wasurezu ni
ikiteikou ne tonatsu wa owari kimi no nioi
SODA sui no awa ni toketa
mata rainen kitto [bad word] you ni
hi ni yaketa watashi dake no
natsu no HEROkaze ga hakonda kimi no tegami
nandomo yomikaesu
 [bad word] moji no mukou kara
omoi wa tsuyoku [bad word] kara
tashikameteitai nandodemo
hikikaesu koto wa dekinai kedo
taisetsu ni mainichi wo [bad word] karahaguregumo ni kimi no inori
semishigure no koe ni kieta
doro darake de te mo tsunagezu ni ita
itsumo tsuyogari bakari no
natsu no HEROnatsu wa owari kimi no nioi
SODA sui no awa ni toketa
mata rainen kitto [bad word] you ni
hi ni yaketa watashi dake no
natsu no HERO

English translation

The last of the fireworks swayed and cascaded in the evening twilight
Making my way back home
Putting up with the tears from long ago
With your arm on my small shoulders, I walk on
Up until the last, [bad word] me
Even though you don't expect me to understand, still
Without forgetting your kindness
I'll start to liveAs summer ends, your scent
Blends into my soda's foam
So that, surely, I'll see you again next year
You're mine alone to have
Summer's sunburned saviorYour letter, conveyed to me by the winds
I'm constantly flipping through the pages
Because of the trembling letters, from so far away
Because of the thoughts swirling so strongly within
I want to make sure of it, however many times it takes
But I can't retrace my steps
Because, taking care, every day I can go on livingYour wishes, sent to the wandering clouds
Was lost among the voices of the chirping cicadas
Even though you couldn't hold my hand through all of the mud, you were there
You're always being so brave
Only you, summer's saviorAs summer ends, your scent
Blends into my soda's foam
So that, surely, I'll see you again next year
You're mine alone to have
Summer's sunburned savior