Username: -- harukamii_

Cover:

It's a good cover. It gives the vibe of your work's culture and the title is clear. I like the color scheme. Overall, I think it's fine. I'm not sure it would stand out in a crowd, but there's nothing wrong with it.

Blurb:
The first two sentences feel disconnected, like their could be something tying them together. Other than that I felt like your blurb was informative enough but still concise. There's nothing daunting enough to pull away prospective readers.

First Chapter:
I liked how you introduced your characters and their situation. You went into some background information but didn't stay there long enough for it to feel like info dumping. There were some elements that I wished were better described, but I got the scene in my mind. I did feel like there were too many exclamation points in the beginning. You can describe the emotion and elevation of the voice instead of using a few of those things. Using them more than necessary takes away the power of their impact.
You had some instances of unneeded words. Deleting anything in a sentence that doesn't need to be there benefits readers by improving flow and readability.