Yorutori Clan

The Yorutori Clan (夜鳥族, Night Bird Clan) is the founding clan of Yorugakure. Due to this they have quite a lot of power when it comes to politics. They are known for being rather short due to their little to no sleep.

Background
The Yorutori clan was once in Iwagakure, but left to seek their own village. They founded the Yorugakure. Due to the clans habit to sleep during the day, they named it the Village Hidden in the Night.The Yorutori Clan is highly regarded by the citizens of Yorugakure.

Nocturnal
Due to their upbringing, the majority of the clan is nocturnal apart from the clans leader. They guard the village at the night and train then as well, they don't sleep often which makes them known for being shorter than other clans.

Anshigan
The Ashigan is a doujutsu exclusive to the Yorutori clan which allows the user to see clearly in the dark and increases their speed, chakra reserves aswell as their quick thinking.