One cold winter, Se-Ra, who had just experienced her first breakup, is introduced to a man named Kae-Se by a friend. However, they experience many twists and turns, and a great deal of trouble! Will these two be able to make it safely across the finish line?

(Source: Manhwakyung, translated)

Notes:
- Chapter count includes a prologue
- The title is a play on words: it can be translated as "Kae-Se and Se-Ra" (the character's names), or it can refer to the well-known phrase "que sera, sera", meaning "whatever will be, will be".