Sito Kujou

Sito Kujou is the Black King and is the younger brother of Shin Kujou.

Personality
Sito is seen as insane and extremely forgetful. He has to often be reminded where he is by other people.

At first glance, he seems nice, but will quickly show his true nature.

He hates it when Shin scolds him.

Appearance
Sito has long silver hair (like his father) and a face similar to Shin. He wears black clothing with a white and black scarf. He is often seen smiling.

History
Sito and Shin were born as the twin sons to the Previous King. Both of them grew up without knowing their parents. As children Shin would often scold Sito for his forgetfullness.

Around two years before the start of the manga, Sito became the Black King and Shin became the White King. Sito stabbed Shin multipule times with a sword and promised to destroyed everything Shin held dear.

Trivia

 * Other characters have stated Sito has the same vioce as Shin.