Sunshine days is about a man who misses his deceased lover. He is thinking of all the memories and of all the good times spent with her, reminiscing and cherishing those moments which is the only thing which keeps his exhausted life still moving. He calls them as his "Sunshine Days". He feels happy and after recollecting em because in real he is completely driven into an exhausted gloomy state. This song Is a mixture of feel good and dreamy emotions on top, but sad and gloomy behind