By the way, did you know Dan has published a book for anyone who wants to learn about music theory? Well, it hit #1 Best Seller on Amazon, and you can get the book and every course Dan has ever made here: secure.bestmusiccoach.com/eve...
I think if you kill any one monster after leaving Toriel(whether you killed her or not), Undyne treats you like you're a rampaging monster. And I'm pretty sure you killed like 2 or 3, but not 100% sure on that.
21:00 Most languages have their nonsensical quirks :D English too ofc, but English is pretty much the easiest complex language to speak good enough to get your message across... ...and too many people settle for that.