Annalisa💓
The lyrics are filled with sorrow and melancholy. But what amazes me was the audio quality and all vocals? it’s pretty amazing. 
Katsutoshi Tsuji
Thank you for your comment. I am so happy that you like the song. Here is an English translation. [Verse 1] Under the starry sky, We made a promise, didn't we? That we would walk hand in hand, Just the two of us, forever. The seasons changed, And on a day the wind grew stronger, Your figure Was nowhere to be seen anymore. [Chorus] Why did you leave me alone? I cast this unanswered question Into the night sky. Why did you leave me alone? That smile from that day Still remains in my heart. [Verse 2] In the photograph, You are smiling. Only the memories Torment me. Even though I call, No one answers, But I still feel like I can hear your voice. [Chorus] Why did you leave me alone? I cast this unanswered question Into the night sky. Why did you leave me alone? Where did the promise We made that day vanish? [Outro] Even after the lonely night breaks, And a new morning arrives, In a world without you, I still keep asking.
Annalisa💓
Oh my gosh. I really enjoyed it. I wish I know what it means though? But it’s so nice. 
Katsutoshi Tsuji
This is a Japanese heartbreak song I made with Suno. I hope someone enjoys it.