Gyate Gyate (Japanese: ぎゃてコラ, Gyate-Kora), occasionally called as "Ohayou" in English-speaking web, refers to a series of parody illustrations for a grin by Kyouko Kasodani from Touhou Project. In a similar vein to Gununu and Moetron, her facial expression is one of the popular templates for drawing among Japanese amateur illustrators.

https://knowyourmeme.com/memes/gyate-gyate-ohayou