A 29-year-old Nepalese student in Tokyo has found herself stuck in limbo with her dreams derailed, and the state of Japan's language schools is to blame.

A survivor of human trafficking in the past, the woman, who wished to be identified only by her last name, Puri, came to Japan in 2014 as an exchange student.

Brimming with high expectations at the time, she said she was determined to acquire a master's degree in sociology, with an emphasis on a subject dear to her, women's rights.