Shiroyasha

Background
Manager of Thousand Eyes and the Demon Lord of the White Night. She is also a bit of a pervert.

She is the floor master of the east side, self-proclaimed strongest host among the 4 digits and below on the east side. She is more powerful than the Water God Izayoi Sakamaki defeated, this is proven after she stated that she is the one who gave the Water Serpent her Divinity.

She holds the title of [Lord of the White Night].

In the fifth Light Novel, it was stated that to become a floor master, she had to restrict her powers, and to do that, she gave away her divinity to Buddha.

Initial Appearance
Shiroyasha has white, shoulder-length hair, with elf-like ears. On either side of her head, there appears to be 2 small,black horns. She is usually seen wearing a kimono and appears childlike due to the [Divinity] granted to her.

Actual Appearance after releasing her power
An elegant looking lady with silvery-white hair that flows all the way down to her waists. Her hair glows due to her Celestial powers being released. Kanzashis with bells at the ends tinkle as she walks. The small black horns are much bigger now. Her full picture can be seen on the fifth volume of the light novel series.

Personality
She has a huge perverted personality and has interest in girls like Black Rabbit and Asuka. She shares this interest with Izayoi. In Episode 7 - Someone Might Get All Kissy with Asuka in the Dark?, Izayoi and Shiroyasha both compliment Asuka's body figure in a very perverted fashion, and later on high-five each other after joking that Black Rabbit should wear a sexier costume while spectating an upcoming Gift Game.

She also shows much care to the [No Name] Community. Her visits to play with KuroUsagi as well as sending letters to them informing them about interesting games are some of the examples.

Aside from showing care to the [No Name]s, she also abandoned her previous living quarters to move to the lower levels and take up the lower position as Floor Master of the East to help out the Communities below Level 5(which means level6-7). Even when she decided to quit, she made much effort to find the next candidate.

Contrary to popular belief, Shiroyasha is a very hardworking and diligent person. She manages to finish her tasks on time, with spare time to play with KuroUsagi and spends time planning for the betterment of the East with Izayoi. Her efforts were so unknown to others that her replacement was amazed by the amount of work she managed to complete while he was struggling with the same amount.

Relationships
Black Rabbit - Shiroyasha can be a pervert to Black Rabbit at times.

Izayoi Sakamaki - It is shown that she is one of the few people Izayoi seems to hold some respect for. He was willing to give up on a duel against her and decided to allow her to "test" him, later Izayoi also goes to her for advice on a certain situation. It's unclear whether Izayoi respects Shiroyasha because of her strength and power or her perverted nature they both share.

Gift
She has many Gifts. One of which allows her to transport players to an alternate dimension as seen in Volume1 or the anime episode where the 3 problem kids meet her for the first time and teleports to the snowy mountains.

Nothing was elaborated about her gift that managed to defeat 5 of Azi Dahaka's first generation of spawn with a punch. Or maybe it is just the effect of her being a Celestial Being.

She also possesses 14 Sun Authorities, more than half of them.

Trivia

 * Shiro and Yasha in Shiroyasha's name literally means "White" and "Female Demon" which resembles her accurately.
 * In the light novel, Shiroyasha is noted to be a former demon lord.
 * Shiroyasha's appearance is similar to Rinnosuke's from Touhou Project.