3rd year, class 4, is a tough kid from Akira's 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 mistress's 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.

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