S1, A4: Yun Jiwon and Seok Jiwon are embarrassed when they realize the pond is rather shallow. As a result of their argument, Seok Jiwon entrusts Yun Jiwon with preparing for his inauguration. Meanwhile, Yun Jiwon recalls her past with Gong Munsu, whom she met 12 years ago on a hospital rooftop where they had both gone intending to jump- Jiwon, following the death of her parents, and Munsu, after an injury that ended his swimming career. Their unexpected reunion ignites feelings for Gong Munsu, while Seok Jiwon grows jealous of the two. Seok Gyeongtae wants to embarrass Yun Jaeho with a spectacular inauguration, but Seok Jiwon sabotages it to protect the Yun family. At the after-party, Gong Munsu learns that he and Yun Jiwon will be living in school housing due to their long commutes.