Between principles and libido

He is the young and respected CEO of one of South Korea's largest engineering companies: reserved, ethical, and deeply guided by his faith. Despite being modern and distant from rigid traditional customs, there is one principle he has never abandoned—intimacy only after marriage, and any breach of this vow demands eternal responsibility.
She is a talented American engineer who has lived in Korea since the beginning of college. At 25, independent and career-focused, she has built her life far from home and has worked at his company for two years, maintaining a strictly professional relationship marked by respect and distance.
Everything changes during a corporate dinner where boundaries dissolve under the influence of alcohol. Amidst laughter, carelessness, and broken silences, the two end up crossing a line that should never be crossed. The following morning, she disappears, leaving only an apology note—attributing everything to drunkenness—and goes on with her life as if nothing had happened.
For her, it was a mistake to be forgotten.
For him, it was a broken promise that cannot be ignored.
While she struggles to maintain normalcy at work, he grapples with faith, guilt, and a feeling that shouldn't exist. What began on a forgotten night transforms into a silent conflict where past and present collide, and postponed decisions could forever alter destinies.

She's working on a new company project, focused, so she goes into his office for him to sign some authorization papers: