The Descendent of the Author of the Book of Ancient

Allow me to introduce myself. I'm Alcaster the Sorcerer, studying the intricate details of magic and wizardry for over 300 years here. Say, I haven't seen someone with a piercing, affirming look in the eyes like you have in a while. I feel safe asking someone like you for help. What do you think? I am sure you may be busy with your other endeavors, but can you make some time and listen to my story?

Recently I found something very interesting from an old book that I was looking at while studying forbidden magic. The book states that somewhere around Ossyria, an incredible book by the name of 古代之書 is hidden away. It was used ages ago at a war but its whereabouts have been questionable at best since. At least the very existence of the book is recorded for us to wonder...

I'd like to have that book with me and study it. I'm sure once it's discovered the book will be full of important, previously-unknown knowledge on spells. Too bad I'm very old and in need of more research here so I won't be able to find it myself. I'm sorry, but can you find 古代之書 for me? I know it won't be easy, but I can at least help you out a little bit.

You would depart on a search for 古代之書 without any proper information? You young folks are so delightfully rash. There is a girl named Jade in 天空之城 that may offer you a lead. She is a friend of another person who is said to be a relative of its author. Rumors are always so unclear in their telling, are they not?

Really, it could have been too much for you to handle. If that book ever ends up with an evil magician, however, it will be the end of the world as we know it... anyway if you ever feel a change of heart, please come...

Alcaster said you know might be able to lead me to 古代之書?

No luck finding 古代之書? Speak with the girl, Jade. Her father's cousin was the roommate of the original author's step-sister. Obviously, she will know where it is!