From the moment moment those guitar chords play, I could instantly connect the music to the setting in the art. You not only captured a city, but the perspective of looking down at the city from above. The idea of creating a song around a specific area of the art was a good premise, and I think the contrasts between light and dark, along with the way spaces are constructed and taken over in a city, are interesting concepts to develop in a song.
Lyrically, I think that there are a lot of interesting angles that could be explored in these lyrics. The song mentions the character being "stuck" and the concept of "you" alluded to the idea of a double meaning - perhaps one's aching desire for light along with the disconnection from a loved one or partner who is, metaphorically the "light", not to mention that the song could possibly be approached from the perspective of that one area in the "megacity" itself. I think the lyrics do touch on these ideas, but I wish the chorus was not so general, especially with the "you were everything to me, and I cannot win this fight" lines, which feel quite overdramatic in a song of this nature.
When listening to the song, I'd say the lyrics didn't really bother me, mostly because I had trouble hearing a lot of the lyrics through the vocals. The mix seemed to bury the vocals, especially around the chorus, which came across as you, perhaps, not being as confident in your vocal ability. I don't know for sure, but it does seem that way - something about your tone I think. That and some moments sound like you're running out of breath, particularly on "fight". This is something that can only be built upon with practice, so keep on singing. :)
The best part of this song was easily the composition. As much as I am confused about the lyrics, the melody is what helps to give them some sense of direction and emotion. Normally, I'm not crazy about long intros, but this one really took the time to set the scene in a way that felt just right. What gets me the most, however, is that guitar riff after the chorus (1:36 to 1:42 as an example). The way that phrase ends, with the single drum beat connecting the two ideas, is a 5/5 buildup and payoff for me.