This research was conducted to systematically and specifically introduce developing alternative book, “easy-to-read book” for teenagers with low literacy and to examine the validity of its processes and results in order to provide practical assistance to those interested in producing such books. The research took three steps: planning, development, and evaluation. In the planning phase, an advisory panel that can discuss the development of books was formed. After selecting a book, the panel was consulted on the general development process and book development over a planning meeting. In the development phase, the text of the selected book ‘dongbackgot’ was revised with the perspective of Universal Design for Learning. Moreover, illustrations that can facilitate comprehension were developed in collaboration with a professional illustrator. Next, the advisory panel was again consulted to revise and add to the texts and illustrations. The book was edited and designed through a publication company before its publication. In the evaluation phase, the advisory panel and a review committee consisting of professionals examined the validity of the process and the result. Through a discussion on the findings of this research, suggestions on future development of alternative books and related studies were offered.