PK (Player-Killing) PKing can be made only in specific channels. For example when you log in the server you will see 24 channels to choose to join. The channels from 1 to 12 are in green color, which means that they're free from PKing. The Channels from 13 to 23 are in white color which means they're is free PK area outside every town.
Channel 24 is a WAR channel, where players from different nations can PvP constantly, in party with nation fellas against the enemy nation, in every time of the day/night in every location of the map, including the towns.
PK Penalties
*If you attempt another PK while in PK Penalty status, you will lose 1,000 Honor Points.
*If you kill a character while in PK Penalty status, you will lose 10,000 Honor Points on the top of the 1,000 points that you have lost by attempting a PK.
*If you continue attempting PK while in PK Penalty status, the severity and duration of penalty will be increased.
-> 1 PK : Cannot use shops for 10 minutes. There is no Honor Point penalty.
(Penalty for PK attempt is in effect starting from 2 PK)
-> 2 PK : Cannot converse with NPCs for 30 minutes. Therefore, it is impossible to use shops, storage, and instructions or proceed with quests.
-> 3 PK : Cannot converse with NPCs for 60 minutes, and other characters can PK you without receiving any penalties.
-> 4 PK : Cannot converse with NPCs for 100 minutes, and have a chance of dropping equipment upon death.
-> 5 PK: Will be confined within a labyrinthine prison for 150 minutes.