Princess Aiko, the only child of Crown Prince Naruhito and Crown Princess Masako, attended school March 8 for the first time in six days after expressing anxiety since being "treated harshly" by boys at her elementary school.

Princess Aiko, the granddaughter of Emperor Akihito and Empress Michiko, and a second-grader at Gakushuin Primary School in Tokyo, has not attended most of her classes since March 1, the top aide to the Crown Prince and Crown Princess said during a regular news conference March 5.

Issei Nomura, grand master of the Crown Prince's household, said Princess Aiko has been complaining of anxiety and stomachaches after being confronted by rowdy boys in her grade while a school official denied the princess was directly subject to such behavior by the boys.