Port Kiris is the location of chapter nine of Eirika's route in Fire Emblem: The Sacred Stones. It is located in the north on the continent of Magvel and resides within the borders of Carcino. It is a large port town that seems to be very populated.
During the story, Eirika travels here to sail to Melkaen Coast and thus into Rausten. However, she is intercepted within the city and attacked by Pablo's hired mercenaries; upon receiving further information of Innes' plight, she takes a detour to rescue him.
Monsters never spawn at this location during the Creature Campaign or main story.