Yaokichi's son, Kin Boy, a natural child, Chapuman. Raised by a naughty and carefree father and a beautiful and kind mother, Chapman is an elementary school student who loves pranks but for some reason can't hate him. His classmate Kid's father is a police detective. The two of them came to the Metropolitan Police Department, but when they saw the police, Chapman's hair stood on end. Horrifying Panic Gag!!