Making a visual novel in RPG Maker 2003 was a curious choice. I’m finding it really difficult to actually control anything because of the too-fast-moving keyboard-only cursor with tiny click targets. I love the art style and music though, and the characters are well-written and each have a very distinct voice, especially the introductory character.
It would definitely be a good idea to re-export this with the RPG Maker runtime included and also tag the bundle as being for Windows, which would make it a lot easier to install and run (particularly from the itch app).