Youn In-wan has written at least 24 books. Their most popular book is Defense Devil, Band 1 with 2 saves with an average rating of 3.5⭐.
Series
10 primary booksDefense Devil is a 10-book series with 10 primary works first released in 2009 with contributions by Youn In-wan and Kyung-Il Yang.
Series
12 primary booksShin Angyo Onshi is a 12-book series with 12 primary works first released in 2001 with contributions by Youn In-wan and Yan.