Allen Williams was born and raised in the United States. He graduated from Murray State University with a Bachelors in Broadcast and a Masters in American Literature. He then earned a PhD while living and working in South Korea. He is the author of several textbooks for English language learning as well as for learning Korean. After spending 6 years in Korea, he moved to Japan where he lives with his wife and two sons and teaches at university. Sulseob Jo was born and raised in South Korea. She graduated from university in South Korea with an undergraduate degree in Chinese characters. She then moved to Japan to study at Nagoya University where she earned a Masters and a PhD in Chinese literature. She is a professor teaching a wide range of subjects from Korean language to Chinese literature as well as Asian culture. She is the author of several books on learning Korean language. She and her husband live in Japan with their two sons.