If you go back to the Havenport docks, there is an event you can click to go through the introduction if you opened another menu.
Viewing post in Moresia - NSFW RPG game comments
Yeah, you’re right. I worded that badly. The issue is that closing the menu should return you to the same dialogue state, not that the menu can’t be opened. That’s what I’ve fixed for the next version.
For clarity, I don’t personally write all of the code, but I do test the game and write the dialogue/content myself.