「SUPER JUNIOR-D&E」、中国シングル「約束」を発売…シウォン、チョウミ、リョウク、キュヒョンも参加
”SUPER JUNIOR-D&E” releases Chinese single ”Promise”... Siwon, Zhou Mi, Ryeowook, and Kyuhyun also participate
Korean boy group 'SUPER JUNIOR' Donghae and Woonyuk's unit 'SUPER JUNIOR-D&E' keeps an important promise to their fans.
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