yukata no yoku niau
kimi no kanashige na egao [bad word] omoide ni
boku wa kokoro [bad word] 
mijikai hitonatsu ni
moete [bad word] koihanabi
hakanaku sakimidare
akai ito [bad word] 
kimi to saigo ni [bad word] hatasenai yakusoku to
natsu no hi no suna no shiro
nami ni sarawarete kieta

Sandcastle 

The yukata matches well
your regretful smiling face
Unable to fully recollect it all
I tear off my heart

For one short summer
the fireworks of love were raining down on us
Fleeting blossoms
The red yarn is collected

I avoided you in the end
unable to fulfil my promise
wave washed away
the sandcastle of a summer’s day