Early in the morning of March 19, Moon Ji Yoon's management agency Family ENT. shared that the actor passed away on March 18 at 8:56PM KST.
▶ [SBS Star] Actor Moon Ji Yoon Passes Away

However, Family ENT. later clarified that it was due to acute blood poisoning.

Via a phone interview with news outlet OSEN, Park Hae Jin said, "I honestly can't believe it. I wish it wasn't true."
The actor continued, "I remember Moon Ji Yoon as a quiet, but hard-working guy, and will always remember him that way."
He added, "I would like to think that he left the world for another good place like this one. I hope he is happy where he is now."

(SBS Star)