Choo Sarang and Choo Sung Hoon will be leaving 'Superman is Back'. 

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On February 25, 'Superman is Back' has announced that, "Choo Sung Hoon- Choo Sarang will be graduating the show. The shooting of last episode is coming soon, and it would be aired at the end of March."

They also added, "We thank everyone for the past 2 years as Choo Sung Hoon and Choo Sarang gained the title 'Choovely' (Choo+lovely) with your great love and attention. Creators of 'Superman is Back' was also happy to watch Sarang grow. We are sad to let them go."

Choo Sarang and Choo Sung Hoon were one of the original members of the show as it started back in September 2013. They were one of the most popular families in the show. 

'Superman is Back' shared great thanks to the family as they said, "We thank Choo Sung Hoon who shared happy virus as he showed a side of a loving father aside form his character of a tough fighter. We also thank Yano Shiho who was a smart mother and a lovely wife. We will continue to look out for their family, and cheer for their best."