
Happiness
해피니스
A deadly virus spreads through the city, forcing residents of a sealed-off apartment to survive and confront their differences. As tensions rise, secrets are revealed and alliances are formed.
A new type of deadly virus spread throughout the city, and the apartment where has different social classes of people is sealed off. With the fear of the virus, and the conflicts of the different classes, the residents have to spend and survive in the new habitation.
Editorial mood guide by WatchMoodly Editorial Team · Base catalog metadata via TMDB.
8.1/10 avg · 563 ratings
Mood Rationale & Viewing Guide: Should You Watch Happiness?
Within our mood classification system, Happiness aligns strongest with a thriller / sad / chill viewing mood (edge-of-your-seat suspense, mystery, and psychological depth). Key tonal signals include dark mystery, heartwarming romance, intense thriller, must watch, underrated gem, modern apocalypse, making it a strong pick when you want a story driven by those themes without spoilers.
Watch If…
- •You want a drama, mystery, sci-fi & fantasy k-drama released in 2021.
- •You enjoy themes centered on dark mystery, heartwarming romance, intense thriller, must watch.
- •You want a self-contained story that matches your current mood.
Skip If…
- •You are looking for a purely lighthearted, zero-stress comfort watch without dark or tense themes.
- •You only watch completed stories and prefer not to wait for upcoming episodes.
Official Trailer

Official Streaming Platforms
Frequently Asked Questions About Happiness
Where can I watch Happiness (2021) legally online?
Happiness is available through official platforms including Netflix, Viki. Use the streaming links on this page to open the licensed release directly.
What mood and genres does Happiness fit best?
Happiness is classified under Drama, Mystery, Sci-Fi & Fantasy and best matches a thriller or sad or chill mood, featuring elements of dark mystery, heartwarming romance, intense thriller, must watch, underrated gem.
How many episodes does Happiness have?
Happiness (2021) is currently marked as ongoing.
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