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.