We all know that Yoo Ah In is a talented and passionate actor but sometimes he may be just too passionate. The actor was reported to have been so immersed in his role for 'The Throne' that his head actually bled during one of the scenes in the movie. 

On the November 4 airing of 'Radio Star,' Yoo Ah In's co-star, Cha Soon Bae, shared the story of how the actor accidentally struck his head on a rock, causing him to sustain a head injury. 

SEE ALSO: Allegations of BTS chart manipulation spark controversy across online platforms

Cha Soon Bae began his story by praising Yoo Ah In as an "acting genius," and said, "There was a scene where Yoo Ah In is striking his head but he accidentally hit his head on the rock and bled profusely. Most actors would have stopped but he just kept on going." 

Kim Gu Ra, concerned after hearing the story, asked, "Did he stitch [his wound]?" Cha Soon Bae answered, "We quickly treated him to stop the blood flow and continued filming." 

Don't overdo it Yoo Ah In; your well-being is priority!