Should We Kiss First

Shall We Kiss First? (1x39)

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It's Mu Han's 50th birthday. While it's a special day, inevitably, there's a dark cloud hanging overhead as it may be his last birthday. Mu Han is disappointed when Soon Jin doesn't seem to have anything planned for this day. All he wants is to spend some time with Soon Jin and I Deun to commemorate a special day. Meanwhile, unit 401 barges into Mu Han's home looking for her cat.