For a first version, I loved the story's narrative, along with its artistic style.
Each of the characters shown seems interesting, although only one doesn't stand out enough, but it seems like he'll become more relevant later in the story.
As for the world structure, I can't say much. But that's because it's an introductory section and focused on the protagonist and his establishment in the current environment, his story, and the possible plot that will have weight within the visual novel.
Although, I feel like I was expecting something more than what was shown, and I think it's because I saw some showcases that were related to this? But you're probably saving that for later, so I'm looking forward to what you have in store for the next update.