Singer Jung Se Woon will not be present in the upcoming musical 'Grease' due to a bad flu.

On May 2, Od Musical Company announced on social media that Jung Se Woon, who was cast in the lead role of Danny Zuko, would not be starring in showings for the time being, and ticket-buyers would be able to get refunds if they so choose.

The 'Grease' showing scheduled for tonight as well well as May 5-6 will be filled in by Kim Tae Oh instead of Jung Se Woon, while Seo Kyung Soo will be taking over on May 4. 

Stay tuned for updates on Jung Se Woon's health.