According to a rep of The Vibe Entertainment, on October 17, Yoo Min Soo experienced difficulty breathing during recording for KBS 'Immortal Song'. The doctors claimed that Yoon Min Soo showed symptoms of hyperventilation syndrome and recommended for him to be hospitalized for treatment. However, Yoon Min Soo decided to rest at home considering his upcoming schedule. 

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In regards to the concert that's set for this week, The Vibe Entertainment said, "We will further discuss with him, and of course, he will go in for another examination soon."

We hope a fast recovery for Yoon Min Soo.