“Your intelligence stopped at the third grade of elementary school” — the rapper and comedian from ‘Sapporo’s Gag Man’ from Sapporo, (28), was told these shocking words by a teacher in the summer of his first year of junior high school. He was diagnosed with intellectual disability and panic disorder. How did his life change after his disability was discovered? Here is an excerpt from his new book, “Not Normal: Why I’m a Rapper, Even though My Intelligence Stopped in Third Grade” (Saitosha)