The Reality of Do Ra-mi: Do Ra-mi is not a ghost or supernatural entity, but a psychological alter-ego born from Mu-hee's childhood trauma and the shock of her near-fatal stunt accident. Do Ra-mi embodies her fear that her success is a fraud and that she will eventually be abandoned.
Ho-jin’s Role: Recognizing that Mu-hee is self-sabotaging out of fear, Ho-jin uses a psychological loophole: they agree to date with the explicit premise that they will eventually break up, removing her anxiety of unexpected abandonment.
The Climax & Finale: During Episodes 10–11, Mu-hee suffers a breakdown as the public media storm peaks. Ho-jin stands by her side without demanding answers. To fully recover, Mu-hee steps away from acting and moves to Los Angeles for psychological healing. Upon her return to Korea, she confesses her love to Ho-jin in all four languages he speaks (Korean, English, Japanese, and Italian), signifying that she has integrated her past and is ready for a genuine, permanent relationship.