Congratulations for releasing your first VN!
I found the deities and sybils lore to be very interesting that it immediately grabs my attention to know more about the world you're crafting. Picking a first-person voice for Roan has been a great choice: it creates that certain intimacy that you get to know him very well.
Since you cannot determine the actual setting from the art, for some reason it has a contemporary modern world feel to me, so it has that pleasant magical realism vibes too.
The final burn SFX is quite haunting and it was not the sound I was expecting due to the size of the letter, but this enhances the magical aspect of it. That the plea must have reached the love goddess, and yet it leaves on a cliffhanger what the future holds.
All-in-all, a very nicely written emotional short fiction that works as a pleasant standalone, but also leaves you wondering for what comes next! If you ever continue this story, I definitely would want to give that a read.