Perfect all-kill

Perfect all-kill (Korean퍼펙트 올킬; abbreviated as PAK) is a music chart achievement in South Korea where a song simultaneously places at number one on the real-time, daily, and weekly components of iChart, a chart ranking aggregator of all major South Korean music streaming services operated by the South Korean web entertainment publisher Instiz Corporation, the operator of the Instiz web forum.

The term "perfect all-kill" was first used when the song "Nagging" by IU featuring Seulong ranked at number one on all Korean music charts in June 2010. Although Instiz iChart was launched in March 2010, it does not list 2010 records. The artist that holds the record for the highest number of songs to achieve a PAK is IU with 22 songs. The song with the most hourly PAKs is "Golden" by Ejae, Audrey Nuna, and Rei Ami as the group Huntrix with 1,484 PAKs. "Good Goodbye" by Hwasa holds the record for a solo act with 750 PAKs.