3rd year class 4 is a tough kid from Akiras school who appears to dominate the other boys. He has some of the qualities of a natural leader. While the others are panicked from these new surroundings Yarai finds this world as living a life without boredom. The son of a wealthy business man with many mistresss and is therefore ignored by his father never having actually met him. His mother died when he was a young child and he was sent to his Aunt who also later died. He is devoloping a mother/son? relationship with sensei.