I really like this and I kind of like the way everything flows in the song. The intro and outro kind of feel like opposites to each other in my opinion and the vibe they give off is really different yet they're really similar. The intro feels more like your stepping into a new world or something like that or you are sitting on a bench looking at the world around you remembering the things you've experienced. The outro is similar to the intro but the vibe of it is really different and it feels more like things are fading, like you're watching as things change until eventually it becomes a unfamiliar sight. The sounds in the outro kind of remind me of a heartbeat in a way but that might just be me. As for the other parts of the song, I really like how the melody kind of doesn't really change despite other parts of the song changing as it progresses. In a way, it suits the name of the song since it's like the void is keeping it's promise and it's remembering you. Even if it's memories change and it starts to forget or not quite remember everything, it still remembers that one specific part. I also feel like the little vocals repeating remember throughout the song also kind of represent that and it's like this being or whatever the void could be is telling itself to remember and to not forget you.
Other than that though, I don't really have any thoughts or stuff to share since I couldn't really think of a way of describing my thoughts about this song so I tried my best to at least write something. Also, I really like what you've written in the author comments since to me, it feels like that could be telling a story or it could be part of a story and it also really suits the song as well. I do wonder if there is some meaning to it or if that was just something you decided to write for this song.
Edit since I can't respond to the reply: That's really interesting, I didn't think about that with the meaning of void since I personally thought that for this song, void might've been referring to something or someone. I didn't think about the literal meaning of it but that's really cool though. I guess what I said about how the outro feels like things are fading suits what you were going for with this song. Now that I know what this song is about, the vibe of the song feels very different when I listen to it and so does what you've written in the author comments. No need to thank me for the words though, I just wanted to share my thoughts since I really liked and enjoyed the song.