Kosta is a blacksmith living on Lokris Island in Assassin's Creed: Odyssey. The game allows you to have an affair with this character. On this page you will find complete information on where to find Kosta and what steps to take to have an affair and make out with him.
Once you arrive on Lokris Island, you won't find a blacksmith's marker anywhere on the island. Instead, you must reach the Opous village in Red Lake Bay and start a side quest called Family Values. You will get it from a caged boy named Supideo.
The first part of the side quest concerns the recovery of the sword and you have to meet with the blacksmith Kosta in the village.
During the meeting, use the opportunity to choose a dialog option marked with a heart icon (the picture above). In addition, agree to collect flowers that will help Kosta's "spear" regain efficiency.
Finding flowers to fulfill Kosta's request
Go west of the village and explore the areas adjacent to Xerxes Military Fort. Ikaros the eagle may help you in finding the flowers - a sample flower has been shown in a picture. When you collect flowers at least once, you will be attacked by a bear. Be ready to defend yourself.
Final meeting with Kosta
Return with flowers to Kosta. Once again, select the option marked with a heart icon. Both characters kiss and the hero will spend an intimate night with Kosta.