Affinity is key to meeting Masters. If you haven’t met a Master yet, once your Affinity reaches the required condition, that Master will be automatically unlocked and you’ll meet them.
Master Affinity has 100 levels across 11 stages, from strangers to Kindred Soul.
Raising your Affinity stage enhances the effects of the Master’s Expertise Skills. You can increase Affinity with Masters through Journeys, or by sending items such as Copper Horns, Silver Goblet, and Elite Spices to increase Affinity with them.