SEOUL (AP) -- "At first, we were even told not to use the word 'Chairman'" an honorific title alluding to North Korean leader Kim Jong-un, according to Joo Dong-man, a props manager, recalling the painstakingly meticulous process of re-creating the life in North Korea on screen for South Korean viewers. Joo was part of the crew for the drama "Crash landing on you," South Korea's biggest recent hit about the story of a billionaire heiress who accidentally paraglides to North Korea and falls in love with army captain.

Apart from its fantastical plot line with prominent stars like Hyun Bin and Son Ye-jin, the drama has been creating a buzz for its unconventional take on North Korea in a level that's yet to be seen on previous drama series. With meticulous portrayals of the hermit kingdom down to words, objects and even make-up style, the cross-border love story even drew praises from several North Korean escapees who reviewed every detail on Youtube. Behind the effort stands people like Joo who had soaked in almost everything about the secretive regime -- collecting details from books, experts and North Korean defectors. 

Joo said re-creating life in North Korea was a difficult process, simply because there's no guidebook on multiple hurdles he had to hop over- skillfully and delicately -- to accurately depict the country while dodging criticisms. He said rules, self-imposed by the production team themselves, were arbitrary and frequently subjected to change. "Later, we got permission (to show propaganda slogans)," Joo told Associated Press. He said three names of North Korea's ruling family- Kim Il-sung, Kim Jong-il, and Kim Jong-un - were banned till the very end.

The surreal plot -- cross-border love between beautiful heiress and a handsome North Korean soldier from the top military family -- doesn't fail to show occasional glimpses into the most repressive authoritarian regime in the world. The team had to tread carefully in order to avoid glorifying or misrepresenting the state. 

The team blurred the portraits of Kims which are mandatory in public places and private homes in North Korea. Objects carrying faces of Kims are illegal subjects in South Korea where wearing or even possessing such objects would be illegal and punishable by the National Security Law for praising the North. The law's vaguely worded clauses has been criticized over the years by different organizations -- including Amnesty International -- for silencing those in odd with government policies, especially on North Korea.

Since all North Korean adults are required to wear a pin with images of late leaders to show their loyalty, Yang Hee-hwa, a costume manager, said the cast had to wear a pin to accurately depict the reality. But she had her own safe way of doing so. "Our badges were almost half or one third smaller (than actual badges)," Yang told Associated Press. 

The team created scenes that had "the least resemblance to South Korea," according to Joo. He said the most difficult props to obtain was smartphones made in North Korea which came from a chain of meetings with defectors, including the one based in Yanji, the Chinese city near North Korea. He declined to comment further on the process due to sensitivity of the matter.

Joo said some scenes were exaggerated for theatrical reason. One scene where a woman puts together a make-shift plastic shower stall to keep the water warm for longer drew a complaint from one of defectors for being "too condescending." The defector who in fact advised the team had told him that such method was used in the 1960s.

However, Kang Na-ra, a Youtuber who defected in 2014, said people living in rural parts of North Korea still use the method. Kang was one of escapees who provided real-life depictions of North Korea -- from a group kimchi-making session to popular make up style (Emphasize the eyebrows). 

The drama series aired its final episode this week. For Yang, this was an opportunity to create something new. "Everything we did was the first so there wasn't any benchmark (to follow)," said Yang. "I think we've created the benchmark."

"To be honest, we always showed poor and famished scenes when it comes to North Korea," Kang told the AP. "But I really like this drama because it shows that North Korea is also a place with people, and they know how to share despite the scarcity."

The drama is a few reminders of Kang's faraway home. It's also a distant place for both Joo and Yang who are both South Korean nationals. With two neighbors technically at war, no contact is allowed between their citizens.

"I thought about how nice it would've been to film in Pyongyang," Joo paused. "Well the time will come one day." (AP)