This is looking really good!
A couple of suggestions:
1. Add the "hololive" tag to the game, for better visibility on itch.
2. If you'd like to have a chance of your game being played on stream by holo talents, you'll need to provide an email address in the game page, so that COVER can write to you to ask for permission. (It's their formal process) Your game is pretty well polished, so I think there's a high chance Biboo would consider playing it!
I'll give the game a try tomorrow and leave another comment with feedback! :)