BTS 4th Muster Happy Ever After. Word Search Puzzle Solver. BTS 4th Muster Happy Ever After word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. BTS 4th Muster: Happy Ever After was BTS's 4th Muster fan club event. It took place from January 13 2018 to January 14 2018 in Seoul South Korea. This includes identifying and searching for words that are related to : Kim Seok, joon, hyung, kook, Min Yoon, gi, Kim Tae, seok, Jung Ho, Jeon Jung, min, Kim Nam, jin, Park Ji .