Below, you'll see any text that was highlighted with comments from the reviewer.
Message to Readers
"...though not for lack of trying..." This brought a feeling that he's trying in life, though he may feel it as vain.
What is he, in the dying light, waiting for? That really gave a sense of mysterious sadness and hope that gave the character a sweet and textured demeanor.
I really like your intake on the prompt, "Quartet"! With these four short details, you managed to create a life-springing character, and paint a fantastic picture of him!