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A combination of the names Yonghwa and Seohyun who participated in the We Got Married song mission. They're both korean musicians. Yonghwa is from the band CN Blue and Seohyun is from Girls Generation. Their song "Banmal song" has become quite popular since their appearance on the TV broadcast.
Unnie: "Have you seen the YongSeo episodes of We Got Married?"
Noona: "No I spent all of yesterday watching Running Man!"
by war_goddess13 December 17, 2013