My Deer Friend Nokotan
ShikanokoNokonokoKoshitantan
I am sorry that dark mode looks so ugly, I tried my best.
If the music is quiet, increase the volume in opera://settings/background_music_settings
I HEAVILY RECOMMEND REDUCING KEYBOARD SOUNDS TO 25. THEY ARE VERY LOUD.
I also recommend turning the close tab sound down to 75, for it is also somewhat loud.
You can do that at opera://settings/sounds_settings
I apologise for the poor attempt to make the sounds match up when typing, I found it really hard.
Enjoy!