Used Books: One Question, One Answer Japanese History Price: ¥800 [New, slightly faded] Japanese History Through Historical Materials Price: ¥590 Set of 2 books. Individual sales are also possible. "One Question, One Answer" shows signs of use. Flipping through it, there are occasional pencil check marks, but it doesn't seem to have any highlighting. "Japanese History Through Historical Materials" has faded cover, but I think it's new. I apologize if I missed anything.