Kyuhyun, who is an MC for KBS 2TV's 'Happy Sunday - Mamma Mia,' will be leaving the show according to a representative from KBS.

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'Mamma Mia' recently changed its broadcasting schedule so that it would be airing at the same time as MBC's 'Radio Star,' of which Kyuhyun is also an MC.  Considering this overlapping period of his two shows, Kyuhyun has ultimately decided to leave 'Mamma Mia' in favor of 'Radio Star.'

He is currently trying to plan his schedule with the production crew for his final recording of 'Mamma Mia.'

Meanwhile, the production crew is actively looking for his replacement.  They are also earnestly searching for a solution so that Kyuhyun's appearance on their show will not overlap with 'Radio Star.'