The Night is not as far as I am aware a sentient/sapient being. The Liberation of Night is, ultimately, the absolute destruction of light. The stars, named Judgements, are the gods of the universe. Killing them all would permanently extinguish light and "liberate the night" or create a dark world without the Judgements or their oppressive laws.
We don’t know if they’ll actually succeed, but their first objective is the Neath, which would involve blowing up (and hence killing) the Bazaar.
edited by Vincent Asmund on 5/18/2020