Looking forward for mysterious 'M'

On 26th of February KBS is releasing it's upcoming drama 'Dear M'. It's going to be unlike any other high school drama I feel, as there's a little twist. This will be a friendship, romance, school life, youth based drama. The plot is about searching for 'M' who is anonymously mentioned at Seoyeon University's online student forum. University students Ma Joo-ah ( Park Hye-su), Cha Min-ho (Jeong Jae-hyun), Seo Ji-min (Roh Jeong-eui) and Park Ha-neul (Bae Hyun-sung) go through various life changes and budding romances as they look for this unknown person 'M'.