[5] The Japanese invasion force consisting of 400 transports bearing 18,700 men under the command of Konishi Yukinaga departed from Tsushima Island on 23 May and arrived at Busan harbor without any incident.

The Japanese took high ground positions on the mountain behind Busan and shot at Korean defenders within the city with their arquebuses until they created a breach in their northern defenses.

Commander Jeong Bal was struck by a bullet and died at around 0900, causing morale to collapse and the swift fall of the city.

He then scuttled his fleet of 100 ships, which included more than 50 warships armed with cannon, and destroyed his weapons and provisions, so that they would not fall into Japanese hands.

[3] The following day, Konishi recombined his forces, and then advanced towards the fortress of Dongnae located ten kilometers northeast on the main road to Seoul.