Words Worth no Houkago

is a Japanese light novel series written by Tomonori Sugihara, with illustrations by Yuuchi Kosumi. The series began publication on September 10, 2003 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
When I awoke to sleep in my bed at home, it was a school-like place, but my classmates were familiar with the "witch", the "Knights of the Light", and the "walk". I exchanged words without words as a matter of course, and I seemed to be the "son of the king", but I was called an incompetent prince ... Every time I sleep, I go back and forth between the two worlds-but gradually the two worlds begin to show a strange match ...! Twin World Fantasy is here.