Ex-wife confirms YouTuber Great Library cause of death as brain hemorrhage; tributes pour in following party-like funeral

Lee Cha-won, the former wife of the YouTuber known as Great Library, whose real name was Na Dong-hyeon, has confirmed the cause of his death in a recent live broadcast.

Cha-won, who is also a YouTuber and known as Yum Cast, revealed in a YouTube livestream on September 9, 2025, that he died of a cerebral haemorrhage, according to a report in The Straits Times. She said:

“There are stories circulating that are not true. I want to clarify certain points so no further misunderstandings cause pain. An autopsy was conducted to avoid any lingering doubts, and it confirmed that the cause of death was a brain hemorrhage.”

She added that Great Library recently mentioned elevated blood pressure but no other significant symptoms. She said that as nothing unusual appeared in his health checkup two years ago, he did not undergo an MRA scan, so the aneurysm was not detected. She said that the rumors of “heart disease in his family are completely untrue.”

Tributes have been pouring in since Na Dong-hyeon passed away at his residence on September 6, 2025. Here are the details.

Tributes pour in as South Korean YouTuber Great Library (Na Dong-hyeon) passes away

Great Library is being fondly remembered by his fans, family and friends following his sudden demise on September 6, 2025. The funeral service for the 47-year-old was held on the morning of September 9, 2025, at Konkuk University Medical Center in Hwayang-dong, Gwangjin District, according to Korea JoongAng Daily.

His ex-wife Lee Cha-won, who was the chief mourner at the Great Library’s funeral service, said:

“It still feels unreal to have parted so suddenly. Na lived happily with his beloved family, friends and fans until the end. Please do not worry too much and instead remember him with fond memories.”

Kim Sung-hoi, who runs the channel G Sikbakgwa, mourned his death by sending a wreath along with the message,

“Mourning the final journey of the one who paved the way. Through you, senior, I came to know the world of game broadcasting and began to dream of becoming a game broadcaster.”

Stylist Seo Soo-kyung wrote on her Instagram:

“Our ‘Dae-do’ oppa, who left after a four-day funeral as lively and extravagant as a party. Not long ago, he sank a long putter on par 4 for an eagle... (with a flashy red ball, no less). At the Jun Chamchi House where we all gathered, he even paid the bill for everyone. He was such a cool brother!!”

Lee Chung-chung, son of designer Lee Sang-bong, said:

“My friend. Your bright presence and energy were a true blessing to us. I never imagined this photo would be our last. I am deeply saddened. May your days be filled with only happiness.”

Kim Dae-beom, who was guided by Great Library in the beginning of his YouTube career said:

“This is shocking and hollowing. As Korea’s top YouTuber, he was exceptionally kind and polite. Why did Great Library, who always brought health and positive energy, leave for heaven so soon? It feels too sudden.”

Great Library ran a YouTube channel called Buzzbean11 with over 1.44 million subscribers. He reportedly started his online career in 2010.

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