The 22-year-old university student was in his fifth day working part time at a Sukiya beef bowl outlet in Tokyo when his boss suddenly told him to run the shop from midnight to 9 a.m. all by himself.
"I had no choice but to obey," said the student, who did not want his name published.
"I suddenly had to make beef bowls without being given any training or instructions," the Hyogo Prefecture native said.