I need help searching for a certain book. I've read it once but I haven't been able to find it since. It's a toothless x hiccup. I'll give some details about the book. I remember some of the beginning. Astrid basically wouldn't marry hiccup because she couldn't marry someone who was a whole person. It's later revealed that toothless was a dragon prince and he ended up mating hiccup-who turned dragon- and there was something a bout a stone that I think was to help hiccup produce hatchlings. Please help me find this book