My Dearest Nemesis S01 E12 Episode 12

"Let's love as if there's no shameful past!"

Su Jang turns down an offer to work in the U.S., choosing to stay with Ju Yan, and they receive their happily-ever-after as they are appointed to key positions at Yongsung Department Store. Ju Yan's grandmother, Chairwoman Jang, apologizes to him for her past behavior, and Hyo Seon also makes peace with Ju Yan, leading to a full reconciliation.