Not your fault (I'm just one of those who has an ultrawide monitor) and Unity needs to be told how to handle that or else I get UI like this: 
I do the same thing in my game. Need to look into "Layout Element" UI component to fix this issue. The hand-drawn looking main character is cute and the story at first really reminded me of the intro to Final Fantasy 3 which is fun. Not sure if I could attack since I don't know if I am seeing all the buttons but I did my best to stay away from the what I think were the baddies to avoid losing health although they move fast. :D