You finished this game surprisingly fast! It's a delight reading your feedback every time. Regarding donations, thank you so much for considering! I really appreciate the gesture. I made a kofi page: https://ko-fi.com/pinlin and if you prefer direct transfer, feel free to send a private message on my social media.
I noticed the change in music volume, but couldn't find a solution. The composers worked individually and their styles differ. I tried editing the soundtracks myself, but it resulted in loss of quality.