tvN's romance-thriller 'Siren' just dropped a making-of video that's going viral. Uploaded to the tvN DRAMA YouTube channel on March 18, the clip shows the cast taking an intensive self-defense class and spending some adorable downtime with a puppy. The undeniable highlight? The long-awaited kiss scene—already fueling major fan buzz and nonstop discussion. 'Siren' follows an insurance fraud investigator who digs into a woman suspected as the prime suspect, sparking a deadly romance-thriller. The series airs every Monday and Tuesday at 8:50 p.m. KST. This behind-the-scenes reel offers candid on-set stories and raw, immersive performances that are grabbing viewers' attention.