The Toi pirates sailed with about 50 ships from direction of Goryeo, then assaulted Tsushima and Iki, starting 27 March 1019.

For a week, using Noko Island [ja] in the Hakata Bay as a base, they sacked villages and kidnapped over 1000 Japanese, mostly women and young girls, for use as slaves.

The Dazaifu, the administrative center of Kyūshū, then raised an army and successfully drove the pirates away.

The Korean government then repatriated them back to Japan where they were thanked by the Dazaifu and given rewards.

[9] The Japanese children and women kidnapped by the Jurchens were mostly likely forced to become prostitutes and sex slaves.