Daily Dose of Sunshine — Ending Explained

The drama subverts conventional workplace tropes through significant narrative twists and revelations:

• Kim Seo-wan's Death (Episodes 6–7): Long-term patient Kim Seo-wan, who views Da-eun as his "mediator," is discharged after showing improvement. However, returning to the crushing isolation of exam preparation triggers a fatal relapse, leading him to commit suicide by jumping from a building.
• Da-eun's Dissociation and Involuntary Hospitalization (Episodes 8–10): Da-eun develops severe dissociative amnesia and complicated grief, continuing to buy gifts and set dinner plates for Seo-wan. After wandering into traffic in a daze, she is diagnosed with a severe Major Depressive Episode with catatonic features and admitted as an inpatient to Hayan Hospital, reversing her role from nurse to patient.
• Community Stigma and Staff Solidarity (Episodes 11–12): When Da-eun returns to Unit 53, her psychiatric record is leaked, triggering protests from patients' families. Head Nurse Song Hyo-jin and Dr. Im defend her, asserting that recovering from mental illness deepens a nurse's empathy rather than disqualifying her.
• The Finale: Da-eun embraces her history without shame, Min Deul-re leaves to work on a cruise ship, Yu-chan establishes healthy boundaries at a new job, and the entire ward is bathed in morning sunlight as Da-eun reflects that everyone is a border-crosser between day and night.

The narrative lends itself to several distinct interpretive frameworks:

• Sociopolitical Critique of "Hell Joseon" Pressures: Views the depicted psychiatric illnesses as structural rather than individual failures—Kim Seo-wan reflects hyper-competitive exam culture, Song Yu-chan represents toxic corporate overwork, and Min Deul-re illustrates intergenerational poverty and financial exploitation.
• "Wounded Caregiver" Psychological Deconstruction: Interprets Da-eun’s initial boundaryless empathy as a trauma response of compulsive caretaking to avoid her own internal voids, showing that true healing requires surrendering the need to control others' outcomes.
• Fluidity of Sanity (Borderline Existence): Argues that sanity is an unstable equilibrium rather than a fixed binary, positing that anyone can cross into mental illness under sufficient environmental stress.