We are all suffering in life but cannot be each other's salvation. We are all living in a life played by fate.
She peels off "her" little by little, and he loses "her" little by little.
He "buried" "her" with his own hands and "gave up" her once again... No one could understand the difficulty and heartache of making that decision, as well as the suffering of being in repeated conflicts later.
In the end it's all lonely.
Concept: Some psychological trauma follows a lifetime