Manhole

It was a Turning Point for Us (1x11)

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Pil becomes a police officer. He finds out that Soon Tae and Jin Sook are dating each other, and Soo Jin and Jae Hyun are enjoying their honeymoon phase. Meanwhile, Jae Hyun's ex-girlfriend, Young Ju, continues to obsess over Jae Hyun and follows him around. Since he is still not with Soo Jin, Pil heads over to the manhole once again.