A teenage girl in Hokkaido is suing for 105 million yen in damages following repeated sexual assaults by a junior high school teacher that left her with posttraumatic stress disorder, her lawyer said Thursday.

The suit also claims the school and the Hokkaido prefectural board of education neglected to take any measures, and is seeking the damages from the teacher, the school principal and local government.

According to the suit filed with the Sapporo District Court, the victim was repeatedly assaulted by the teacher at her home and school for two years from April 2004.

The teacher, who was in his 30s and was eventually arrested for violating the Child Welfare Law and fired, is now serving a prison term. Although the girl's father and relatives asked the school to take preventive measures, the teacher did not stop assaulting her, prompting her father report to alert police in February last year.