In Family Register Episode 63, Lim Ji-hoo regains consciousness after the vehicular collision but suffers selective amnesia, retaining only memories of his London studies and Do Do-hee. Seizing his memory loss, Do-hee manufactures an alibi, while Na Ji-ni refuses an unjust settlement and vows to expose Do-hee's deliberate assault.
| Item | Details |
|---|---|
| Drama | Family Register |
| Episode | Episode 63 |
| Network | MBC |
| Broadcast Window | Monday to Friday at 7:05 PM KST |
Ji-hoo Regains Consciousness and the Shocking Diagnosis
Following the cliffhanger in Family Register Episode 62 Ending Explained, Lim Ji-hoo opens his eyes in the hospital ward. His physical recovery brings relief, yet medical evaluations reveal severe retrograde amnesia. The trauma has erased recent years from his mind.

Ji-hoo fails to recognize even his aunt Noh Young-joo, plunging the family into sorrow.

His memory stops at his study period in the United Kingdom, where Do Do-hee occupied his life. Unaware of the betrayal that followed, Ji-hoo asks his bewildered relatives whether he and Do-hee are already married.
Do-hee's Calculated Deception from the Holding Cell
Do Do-hee, held in custody for the car assault, catches wind of Ji-hoo's condition. Rather than showing remorse, she constructs an alternate narrative.

Over the telephone, Do-hee frames the collision as a driving mistake stemming from British steering orientations:
"We had an argument, and while driving upset, I made an error with the direction."
She claims she was attempting to shield him, concealing her deliberate vehicular charge.

Ji-hoo's mother Kim Sun-kyung exploits Ji-hoo's words to push for a rapid settlement. When Na Ji-ni discovers that authorities closed the inquiry due to the manipulated settlement, she confronts the injustice head-on.

The Little Mermaid Cue and Lingering Memories
Ji-ni arrives at the hospital room to reach Ji-hoo. She presents the necklace he gave her, searching for any spark of recollection.

"You gave me this necklace."
When Ji-hoo remains hesitant, Ji-ni invokes their private nickname:

"You called me the Little Mermaid, so are you truly acting like this?"
The phrase triggers physical pain in Ji-hoo's temples. In subsequent moments with Do-hee, he clutches his head as fragments resurface.

"I felt as if something was about to come back to me."
Do-hee swiftly interrupts and redirects his attention outside, showing her alarm at any memory of Ji-ni.
Ji-ni's Transformation and the Hospital Corridor Climax
Past episodes portrayed Ji-ni enduring family pressure quietly, but Episode 63 marks a decisive turning point.

"Should I run away again from someone who tried to kill me? Ji-hoo risked his life for me. I will protect him. I will make sure he remembers and see Do-hee punished."
When Kim Sun-kyung bars the doorway and slaps her, Ji-ni refuses to bow down.

"The person who deserves punishment right now is Do Do-hee, not me. Am I wrong? What did I do wrong? Both Ji-hoo and I are victims."
Ji-ni's mother Na Se-ri arrives and witnesses the assault on her daughter, storming the ward with fury.

"Why are you striking someone else's daughter? Did we tell Ji-hoo to jump in front of Do-hee's car? Did we push him? If your son is precious, my daughter is just as precious!"

"That was for striking my daughter."
Narrative Trajectory and Unresolved Clues
While Do-hee secures temporary release through the dropped charges, Ji-hoo's father delivers a stern boundary.

"I will not make any decision until Ji-hoo's memory has returned in full."
Key plot elements established in this broadcast:
- Ambassador Do's Sponsorship: Kim Sun-kyung banks on financial backing from Do-hee's influential family, yet uncovering the crime threatens to backfire on the entire household.
- The Little Mermaid Anchor: The shared nickname serves as an involuntary cognitive key for Ji-hoo.
- Ji-ni's Legal Resistance: Ji-ni abandons passive endurance and prepares to reveal the deliberate nature of the crash.
For viewers tracking the cast's tailored blazers and everyday wardrobe from this installment, explore the companion style analysis in Family Register Episode 63 Outfits: Tailored Blazers and Everyday Shirt Styling and review previous styles in Family Register Episode 62 Outfits: Dramatic Confrontation Tailoring and Knitwear Style Breakdown.
Frequently asked questions
What specific memories did Lim Ji-hoo lose in Family Register Episode 63?
Lim Ji-hoo lost all recollections from the past few years, retaining only memories up to his overseas study period in the United Kingdom. He remembers Do Do-hee from that era but fails to recognize his aunt Noh Young-joo or Na Ji-ni.
How does Do Do-hee explain the car crash to Ji-hoo?
Do Do-hee claims that after a minor argument, she became flustered behind the wheel and made a directional mistake due to confusion with UK driving configurations. She fabricates a story that she was attempting to shield him rather than hitting him intentionally.
What clue triggers a physical reaction in Ji-hoo regarding his lost memories?
Na Ji-ni mentions their private pet name Little Mermaid and displays the necklace he gave her. Hearing the phrase Little Mermaid causes severe headaches for Ji-hoo as subconscious memories begin to resurface.
What stance does Ji-hoo's father take regarding Do Do-hee after dropping charges?
Ji-hoo's father states firmly that he will make no commitments or decisions regarding Do-hee until his son's memories have fully returned.