8 eps
Episodes8 episodes · 1–8 free here
Free on Back'n'Time
The story
Quick answer: 8 episodes, English original audio, and episodes 1–8 play right here tonight.
Princess Gloria is forced by a system to seduce Hades, the Underworld King, to survive five deadly trials. She learns she's a fragment of his lost love Grace, but rejects godhood and his love—choosing her own life instead.
- Episodes
- 8
- Language
- English
- Free here
- Episodes 1–8
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Questions people ask
How many episodes are there in Seduce the Underworld King or Die?
Seduce the Underworld King or Die has 8 episodes in total. Short dramas run about one to two minutes an episode, so it is an easy one-sitting binge. Episodes 1–8 play right here on Back'n'Time.
Can I watch Seduce the Underworld King or Die for free?
Yes — the first 8 episodes are free to watch on this page, no account and no sign-up.
What happens after episode 8?
Tap episode 9, or any tile with a lock on it, and we hand you over to the official app at that episode. If the app isn't installed yet, you'll land on its store page first. We don't host the locked episodes and we never ask for payment details.
What's Seduce the Underworld King or Die about?
The story section above has the setup without spoilers past episode 8.
What language is Seduce the Underworld King or Die in?
The audio is English. It was added to Back'n'Time on Oct 28, 2026.
Episode 9 continues in the app
You've watched the free part. Seduce the Underworld King or Die carries on in the official app — we'll open it at this episode.
Continue in the official appKeep watching 1–8