Romance Is a Bonus Book — Ending Explained

The series resolves its central mysteries and conflicts across its final narrative arc:

• The Kang Byeong-jun Mystery: Author Kang Byeong-jun did not abandon the literary world out of arrogance or greed; he was diagnosed with progressive Alzheimer's disease. To protect his dignity, Eun-ho secretly housed and funded his medical care in Gapyeong for years at great personal and financial expense.
• Ji Seo-joon’s Heritage: Designer Ji Seo-joon is revealed to be Kang Byeong-jun’s estranged biological son. In Episodes 15 and 16, Eun-ho introduces Seo-joon to his dying father, sharing the author's personal diaries which prove that the father loved and remembered his son even through his cognitive decline. Kang Byeong-jun passes away peacefully, and Seo-joon designs the cover art for his father's final published manuscript, The Heroes.
• Dan-i's Career and Romance: After corporate policies force Dan-i to resign due to her resume discrepancy, Director Go Yoo-sun and CEO Kim Jae-min recognize her undeniable talent and establish a blind recruitment contest, formally bringing Dan-i back to Gyeoroo. Eun-ho and Dan-i openly acknowledge their romantic relationship to their colleagues, concluding the drama in mutual love and creative fulfillment.

The drama lends itself to several interpretive lenses:

• Socio-Economic Feminist Reading: The series functions as an institutional critique of modern hiring frameworks that devalue maternal life experience in favor of rigid credentials and age limits, demonstrating the vital worth of resilience and soft skills.
• Meta-Textual Literary Reading: The narrative mirrors the bookmaking process itself, framing Cha Eun-ho as an editor who tenderly curates and supports Dan-i’s life while she authors her own empowering second chapter.
• The Sanctuary Perspective: Eun-ho's role can be interpreted allegorically as an unwavering emotional haven—an environment where Dan-i is free to exist without shame, failure, or the need to perform competence.