That was so good! It's very sad. Please update soon!

A rather short beginning, but this is a fairytale. As far as suggestions go, about the only thing I can suggest is a nitpicky thing: "a set of twins WAS born..." rather than "a set of twins WERE born..."

This is because you are referring to ONE set of twins, therefore you use the singular "was". Otherwise, you could use "were" as in "twins were born".

That is all. An intriguing beginning. I hope you update soon.