A popular South Korean YouTuber has been found dead at the age of 46, just two days after he complained of sleep deprivation in a broadcast.

Dae Library, whose real name was Na Dong-hyun, was found dead in his Seoul home on Saturday by police, who were dispatched following calls from friends who said he failed to meet them.

Police found no signs of foul play, nor a suicide note. They are investigating the possibility that he has a pre-existing illness.

Just two days before his death, he told his followers that he had gotten very little sleep as he was attending Seoul Fashion Week.

'I think I slept for about three hours after getting my hair and makeup done from morning', he admitted in the livestream.