I think this is an interesting idea and there seems to be a lot of information already fleshed out in terms of characters and worldbuilding which is great! but I have to be sincere with you and say that both the UI and the sprites ingame are a bit lacking to the point where it might hurt the game and it's playability.
Regarding the game mechanics, I found it to be a bit tedious to get the companion to behave like I wanted and often I felt like I was battling against the controls to get the desired outcome. Companion games are usually a hit or miss and I think that there's still some room for improvement in the companion behavior.
Keep up deving!