The worldwide attention and excitement for the new Korean zombie series "All of Us Are Dead" surprised director Lee Jae-kyoo, but it also piqued his interest in a possible second season.

"Many new paths, settings, and scenarios were created on purpose to extend the tale into a second season, including the creation of two new zombie races: immune and immortal zombies. If the first season was about humanity's survival, the second season may be about zombie survival. In an online discussion with a group of reporters on Monday, Lee remarked, "I aim to offer fans with another season."

Despite the fact that "All of Us Are Dead" is based on author Joo Dong-Geun's iconic zombie webtoon of the same name, the director claims that many places, characters, and tales have been changed for the series.

"I believe a webtoon's degree of expression differs significantly from that of a film or drama series." "I definitely modified several characters and made them appear less vicious and bloodthirsty, including Gwi-nam and Na-Yeon, in order to make our series pleasant to a wide variety of people," the director added.

When questioned about the unusual zombie activities in various places, including the cafeteria, science lab, gym, and library, the director expressed his happiness and appreciated the efforts of both the production staff and the performers.

"Even though I was at a crossroads during filming the library sequence for five days, the ever-enthusiastic production team and crew were my inspiration to keep going." And I observed a lot of young actors who couldn't produce motions in the wild action sequences, but actors Yoon Chan-young and Yoo In-soo did a fantastic job in the library," the director told The Korea Herald.

"Unlike many other sequences, we edited the library scene on set so that we could make the required modifications while filming the scene." "I believed this would be a really thrilling scenario to watch after seeing the trimmed version," Lee added.

The 51-year-old filmmaker also talked about how tough it is for him to grasp the lifestyles and perspectives of high school pupils.

"I graduated from high school more than 30 years ago. The first webtoon series debuted in 2009. I believe that ten years is sufficient time for things to change around us. Though it was difficult, I kept a close eye on the faces and behaviors of high school pupils today," Lee stated.

"Some of today's pupils' acts and expressions were quite difficult for an adult to grasp. "We spoke extensively with the players, who were themselves, high school kids, to corroborate these roles," the director added.

While Lee believed that many viewers would appreciate the thrilling zombie thriller, he also hoped that it would prompt people to consider the societal concerns presented in the series.

"When an event, such as school violence, occurs, the origin of the zombie virus was incorporated in the series as an attempt to emphasize the individuals who take responsibility and those who do not." "I think the series gives viewers an opportunity to ponder about what type of people they are," Lee added, despite the fact that it is another zombie action thriller.

Following "Squid Game," "Hellbound," and "The Silent Sea," the 12-part series has led Netflix's worldwide streaming rankings since its January 28 debut, becoming the fourth Korean-language series to do so, following "Squid Game," "Hellbound," and "The Silent Sea."