The stickers seemed to poke fun at World War Two 'comfort girls' or sex-slaves'.

The stickers featured images from a recent documentary about kidnapped women, who were forced into prostitution and used as sex-slaves for Japanese soldiers.

An estimated 200,000 women from South East Asia were forced into sex slavery for the Nipponese soldiers, of whom, many were from China and Korea.

Following the hullabaloo, the objectionable contents were removed, Tencent, which owns QZone, said.

Interestingly, earlier this month, Tencent was left red in the face after one of its chatbot from the popular QQ messaging app turned rebellious.

The renegading bot told users why it hated the Communist Party, much to their bemusement.

Meanwhile, while that didn't drove them furious, the recent gaffe has.

Users have taken shots at the site, calling its developers 'heartless'.

"How would you feel if this was a member of your family? If it was your mother?," an user asked.

Another user stated that certain things aren't meant for fun and reprimanded the company for making fun of the concerned women.

Tendering an apology, Tencent said in a statement that it was sorry and vowed to never repeat such a mistake.

"We are deeply sorry for the impact this incident has had," the company statement read, adding that an investigation was on.

'We have learnt a lesson and will resolutely ensure that such an incident does not happen again," it read.

However, the explanation did little to thaw the tensions, as users seemed dissatisfied.

Image:www.bangunrumahmas.com