A series of cases this year in which female students were sexually harassed when seeking help with job-hunting from employed male alumni suggest the issue is a growing problem, and have prompted concern among recruitment experts and police.

Students looking for jobs in Japan commonly contact alumni of their university to gain insight and advice about companies where they are interested in working, often meeting them in person and, in some cases, at bars or restaurants in the evening.

"I've been able to overcome the incident, but there are many who will be scarred for the rest of their lives," said a 22-year-old woman, who graduated from university in March, of an experience she had while job-hunting as a student.