This Song Instead of a Love Letter. 
Vocals: Seira
Lyrics: Seira & Nakayama [bad word]  Nakayama Gojiro

Will you understand if I write it on paper?
Will it be visible if I turn it into words?
Everything disappeared
But my body felt heavy

I finally noticed the words that were lacking
Even though they wrap up everything now

No matter how many times I call out your name
It’ll never reach you, but now
I recall your smiling face, looking back at me
It was dazzling, so I lowered my eyes fixedly
Even though I thought that I wouldn’t [bad word] to love
Someone again
Because it was you Who opened the doors of my heart.
However, you’re not around anymore

Where am I walking now?
I lost sight of the lights

In order to supplement my damaged heart
Will I be at ease if I can think of someone?

No matter how many times I call out your name
It’ll never reach you, in the night sky
Your tender smile appeared
It was dazzling, so I lowered my eyes fixedly
Even though I tried to fall in love
With someone again
Your voice won’t leave me
So now, I call for you

I [bad word] a letter with the words that I held gently to my chest
single line is good enough: I want them to reach you. single teardrop fell

No matter how many times I call out your name
It’ll never reach you, but now
I recall your smiling face, looking back at me
It was dazzling, so I lowered my eyes fixedly
Even though I thought that I wouldn’t [bad word] to love
Someone again
Because it was you Who opened the doors of my heart.
Even now, I think, “Thank you”
Because it was you, I relaxed
So now, I think of you

ROMANJI:

Rabu Retaa no Kawari ni Kono Uta o.
Vocals: Seira

Kami ni kaitara [bad word] no kana
Kotoba ni sureba [bad word] no kana
Nani mo nakunatte shimatta
Dakedo karada omoku kanjita

Tarinakatta kotoba   yatto kizuita
Ima nara subete [bad word] no ni na

Nando namae o yonde mo [bad word] todokanai kedo ima
Omoidasu   furimuku egao ga
Mabushikute   kyutto me o fuseta
Mou nido to dareka no koto
Suki ni naranai to omotteta no ni
Kimi datta kara   hodoketan da
Na no ni mou   kimi ga inain da

Ima wa doko o [bad word] darou
Akari miushinatte shimatta

Kakechatta kokoro   oginau tame ni
Dareka o omoetara raku na no kana

Nando namae o yonde mo [bad word] todokanai yozora ni [bad word]   yawarakai egao
Mabushikute   kyutto me o fuseta
Mou ichido to dareka no koto
Suki ni narou to omotte mita no ni
Kimi no koe ga   hanarenain da
Dakara ima   kimi o yobun da

Sotto mune ni daita   kotoba o tegami ni [bad word] Hitokoto de ii   todoite hoshii.   Namida   hitoshizuku   ochita

Nando namae o yonde mo [bad word] todokanai kedo ima
Omoidasu   furimuku egao ga
Mabushikute   kyutto me o fuseta
Mou nido to dareka no koto
Suki ni naranai to omotteta no ni
Kimi datta kara   hodoketan da
“Arigatou” ima mo omoun da
Kimi datta kara   hodoketan da
Dakara ima   kimi o omoun da