Doumyouji Tsukasa

The leader of the F4 group and the heir to the large Domyouji Enterprises, and his family is extremely wealthy and influential within Japan. Tsukasa spent much of his childhood with the rest of the F4 since his mother was always overseas, and his older sister had moved to Los Angeles after her marriage. His mother, in particular, is cold towards him, and wants to control his life for the sake of preserving the family name.
As the extremely hot-blooded, hot-headed and volatile leader of the F4, Tsukasa uses his power to rule over the entire school. He uses an infamous red card and attaches it inside anyone's locker who has made the F4, particularly him, upset.