>>1865704Fun fact: due to a botched dental surgery Polka received, she has a small bump where her teeth meet the roof of her mouth, causing her to make a lip noise whenever she tries to pronounce words with an emphasized N sound, like "nya~". She's rather sensitive about it, and so she avoids using those words often.
She has the ability to get another surgery to resolve the issue, but due to how anxious dentists make her, she's chosen to avoid it.
https://youtu.be/wxMFjKzIrNk 