Emperor Kōbun was the 70th emperor of Japan, reigning from 672 to 686 AD. He was the son of Emperor Tenji and was known for his short and tumultuous reign, which followed the Taika Reforms. His rule was marked by political strife and conflict, particularly with his half-brother, Emperor Temmu. Kōbun's reign ended when he was defeated in a power struggle, leading to his abdication. After his defeat, he was forced to commit suicide, and Emperor Temmu ascended to the throne. Kōbun's legacy is often overshadowed by the events that led to his downfall and the subsequent rise of Temmu.