On 14 December 2013 it was announced that Sungmin would be participating in his new Musical The Three Musketeers after group member Kyuhyun's last appearance.
Tanggal 14 Desember 2013 diumumkan bahwa Sungmin akan terlibat dalam drama musikal terbaru berjudul, The Three Musketeers setelah penampilan terakhir Kyuhyun.