Gwanghaegun
The 15th king of the Joseon dynasty (r. 1608–1623), deposed by a coup and therefore remembered by a princely title rather than a temple name.
The Joseon dynasty Gwanghaegun Annals (1609) describe a UFO-like sighting in Yangyang: a 'round, glowing object' rose from the ground, shining white, blue, and red, then split in two and vanished. The K-drama 'My Love from the Star' was inspired by this record.
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