Koyin

is a character in.

Biography
Koyin works on a farm below the Hateno Ancient Tech Lab in Hateno Village, tending to animals such as Hylian sheep and cows. She works alongside Dantz as well.

She gives Link the quest "The Sheep Rustlers", telling him that several monsters have been stealing and riling up her sheep, asking him to take care of them. Upon completing the quest and speaking to her, she rewards Link with 10 bottles of Fresh Milk.