Hi Cloudlime!
Going to do a bit of bugreporting to helpfully help with fixing things during the grace period.
Here is what I found so far:
1. Opening the Kanade Crane with all of the angry faces causes the game to lag significantly
2. Exiting the game will cause the game to overlap the arcade music multiple times.
3. I noticed that returning to the arcade would create duplicate versions of myself from past attempts (the ghost of the past are haunting me nooooooo!)
I checked the JS console to see if I could find any error messages but nothing popped up.
Good luck! Congrats on getting the solo project through with everything else you have been doing!