Ma Joo-ah
Park Hye-su
Ma Joo-ah

Campus life at Seoyeon University has always been relatively peaceful, but when an anonymous post pops up on the school’s online community, the entire campus is flipped upside down.
Ma Joo-ah
Park Hye-su
Ma Joo-ah
Cha Min-ho
Jaehyun
Cha Min-ho
Seo Ji-min
Roh Jeong-eui
Seo Ji-min
Park Ha-neul
Bae Hyeon-seong
Park Ha-neul
Gil Mok-jin
Lee Jin-hyuk
Gil Mok-jin
Hwang Bo-young
Woo Da-vi
Hwang Bo-young
Min Yang-hee
Kwon Eun-bin
Min Yang-hee
Choi Ro-sa
Hwang Bo-reum-byeol
Choi Ro-sa
Moon Joon
Lee Jung-sic
Moon Joon
Cha Min-ju
Yoon Jin-sol
Cha Min-ju
Kim Joon-ho
Ban Yi-dam
Cho Jun-young
Ban Yi-dam
Right off the bat, the drama did a poor job establishing the mysterious M and its mystery. The story was so soulless and shallow it made the 12 episodes runtime so damn dreadful. The whole trio couples were lackluster from all angles, both the actors and their characters. Dialogue was riddled with platitudes and awkward exchanges, making each interaction painful. Even the central mystery, which could have been the saving grace, was handled so clumsily that it failed to generate any suspense or intrigue. The mysterious M could've been an alien for all I care. The ML's sister was the only real sensible semi-functional piece of story in the entire thing. One more thing: from a production standpoint, it adopted the deplorable style of cutting everything short and prematurely; nothing plays in full.
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