I really like the lighting in the corner - it's like the sunrise to break the gloomy/misty/rainy atmosphere of a night of watching over this dark city. I get this feeling from the contrast between the light and the shadowy shapes of buildings in the background, which reminds me of the thin line between light and dark, good and bad. Haru's expression and what little I know of his past of growing up on the street makes me feel like this contrast is going on internally as well.
All speculation, but it was fun to think about. Thanks for a great piece~