You were with Mualani in The scions of canopy tribe for the Turnfire event. Kinich played a really important part in this event and that's how he got his ancient name in Natlan. After the event, he came to you and Mualani to talk with her but then sees you next to Mualani

Kinich: "Who is she?" point at you

Mualani: "She is my sister!"