Wow that last part was a thriller. I was at the edge of my seat the whole time. The plot twist that Penelope was a bird had me re-thinking my entire life.
She is so upset because Lily doesn’t sound like a robot! 😂 Having had to study things like this, I had never considered that would be a complaint users might have!
I hope you've had a chance to see what Lily was like before... maybe it was just this one voice line She wasn't a robot, just a really ...unenthusiastic reader. She was a fan favorite for sure. Now she's a vocaloid, and it just isn't the same Ah! I just noticed, at 7:16 - that's the Lily we remembered!
Yes, in most contexts, omae is rude, though it can be used between male friends (somewhat like "dude"), for example. Kudasai certainly isn't rude, it means "please." I guess it could be rude when used sarcastically, just like anything else.