The movie '30 Days' tells the story of Jeong-yeol (played by Kang Ha-neul) and Na-ra (played by Jung So-min), who, unable to bear each other's quirks and awkwardness, eventually suffer from a shared amnesia disorder just before becoming the perfect couple. With Chuseok (Korean Thanksgiving) approaching on October 3rd, it's D-30 to the film's release.

Jung So-min and Kang Ha-neul previously received acclaim for their comedic chemistry in director Lee Byeong-hun's 2015 film 'Twenty.' Now, after 8 years, they reunite as a couple in crisis who are on the verge of divorce, raising expectations for even greater comedic synergy than their previous work 'Twenty.'

Jung So-min remarked, "It felt strange to naturally continue from 'Twenty' to '30 Days.' What's even more surprising is that when we made 'Twenty,' we were in our twenties, and now that we've reunited for '30 Days,' we're both in our thirties. Many people around us have discussed whether '30 Days' is a sequel or a follow-up to 'Twenty,' and even I find it interesting how the worlds of these two films seem to connect."

She continued, "Back then, I used to tell people that it was a completely different story, but when I actually saw the finished product, it felt like a continuation of 'Twenty.' It was the first time I watched the film properly at the VIP screening, and in that sense, it was enjoyable in its own way. It brought back a lot of memories from 'Twenty.'"

Regarding their reunion with Kang Ha-neul, Jung So-min said, "I didn't really worry about whether it would be similar to our previous work." She added, "The atmosphere on the set of 'Twenty' was great. However, while it felt like a gathering of young and energetic people having fun during 'Twenty,' '30 Days' was more comfortable in a different way because we met as individuals who had gained experience and maturity."

She went on to say, "Our range of stories we could tell had expanded," and explained, "Usually, when actors meet each other on set, there's an adjustment period to get used to each other. Thanks to our previous experience working together in 'Twenty,' we were able to skip that process, which was efficient and something I appreciated from a working perspective."

While they were already friends, Jung So-min also felt that their relationship became even closer during the filming of '30 Days.' She recalled, "When 'Twenty' filming ended, we were friends, but there was a bit of a strange distance. It wasn't to the extent that we couldn't talk to each other, but it ended on a warm note, more like a friendly relationship."