It's hard to discuss how I feel about this VN without feeling mean because there's nothing really bad about it, and there were a lot of sweet moments within it, but unfortunately, I wasn't able to feel a lot of strong feelings toward it. I think my main thing was that I felt like it didn't do much with its premise. It's basically what you'd expect the VN to be like from just reading the description alone. Because of this, a lot of the moments that are supposed to have a big impact on me just don't. The prose is servicable, but there are a bunch of issues that have already been brought up by Peppekz, although I did like the line about nostalgia. The dialogue is good, but nothing really memorable. There are some good ideas in this VN. I think the romance between the protagonist and Sergio is really sweet and I like when they brought up their high school. That brought up some nice characterization between the two. I also like the bittersweet sentiments the protagonist brings up, that was nice. But overall, I get the sense that there's something missing. Considering this is your first visual novel though, this is a decent start, but I urge you to take the feedback of me and others to heart with any potential future projects you have. I already see you're looking to improve yourself, which is good! Good luck out there!