Thank you so much for your valuable feedback!
The background music you mentioned is indeed great. During development, I only focused on the sound effects and didn't pay attention to the background music design. If I have the opportunity, I will add it in an update after the game's development is complete.
As for the visuals, I initially wanted to go for a minimalist style to finish within the limited time, but I really appreciate your honest feedback. Understanding what players find outstanding (and what's lacking) is really helpful. Thank you again for playing and your encouragement!