Melancholia

Faulty Brakes (1x5)

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After the Math Olympics, Seung-yoo opens up and tells Yoon-soo the traumatic experience he had bottled up inside of him for a long time. Yoon-soo comforts him and sympathizes with Seung-yoo's pain. However, Sung-jae witnesses the moment and gets overwhelmed with a strange feeling. Meanwhile, suspicions that Ye-rin got preferential consideration for the competition to become an issue.