Actor Lee Junki is currently going through his basic military training in the army but before he left, he had finished a book on learning Korean. His company said on the 13th, "The book will be released in four languages; Korean, English, Japanese and Chinese and the popularity has been nothing short of amazing. It will only be released on the 26th but people can't wait to get their hands on it. We're getting many orders from overseas too." He is a true Hallyu star.