Ahah, thanks! I'm more a story creator than a developper, for me lore, even so small may it be, is as important as controls or visuals
As for the mouse, I initially wanted to do exactly this! But since I've never really tracked a mouse cursor with vanilla JS before, it would have taken me too much time to make so, I had to code keyboard inputs instead. I know it's not very comfortable (Space spamming, right hand moving constantly between arrows and Enter), but I had no choice in such a short time bracket.
When I'll upgrade the game, you can be sure I will make both options available!