New Delhi, June 28 -- Princess Kako of Japan has gone viral after a video showed her sleeping on an economy flight during her visit to Brazil. The 30-year-old royal, niece of Emperor Naruhito, was on an 11-day tour across eight cities.

Princess Kako visited four places in one day, which left her visibly tired. In the video, she is seen resting against the window soon after sitting down.

People online praised her for being simple and hardworking. Some admired her humble choice to fly economy while others felt private videos like this should not be shared.

"Videos like this should not be shared. Princess Kako is a hardworking and humble role model. We should protect her, not expose her," the South China Morning Post quoted a user as sayi...