A video clip of the “No Breathing” BTS teaser poster filming has been released! After the first movie trailer for “No Breathing” was released and garnered over a million views, the BTS clip for the trailer was released on September 16. The clip showed various cuts of the two main leads, Lee Jong Suk and Seo In Gook, as well as short interviews. Lee Jong Suk and Seo In Gook are to play swimming rivals and the clip showed both actors’ charismatic and intense eyes as well as their well-toned and muscular bodies, shaking up fans’ hearts everywhere! The clip also revealed the behind-the-scenes set, giving fans an insight into the hidden parts of the film. During Lee Jong Suk’s interview, he commented on how the filming took place on the beautiful beaches of the Philippines in the hot summer weather. Seo In Gook also commented on the beautiful scenery and added, “We worked really hard for ‘No Breathing’ so please give it a lot of interest and love.” “No Breathing” will hit theaters on October 31.