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You can watch Step Back! I’m the Hidden King online on Runotoon, in the web browser on your phone or computer. There is no app to download. Start with Episode 1.
The first 10 episodes are free, and you don’t need an account to start. Each of the other episodes unlocks with 15 Coins. A new free account comes with 75 Coins, you can collect free Coins every day, and Runotoon Pass adds Coins every week. It is included in Runotoon Pass: Pass members open every episode without Coins.
Step Back! I’m the Hidden King has 63 episodes on Runotoon so far, and new episodes are still coming. Together they run about 2 hours. The latest episode came out on November 10, 2026.
On a New York-bound flight, Arthur meets Throne Tech heiress Anya, who offers a fake marriage to escape an arranged union. Arthur refuses, yet upgrades her investment bid to $100 billion. Later dumped by his fiancée Serena, Arthur is defended by Anya. At a grand gala, Arthur reveals himself as Titan Group’s CEO. He funds Anya, and the two choose to build a new life together.
Yes. Its original language is English, and it has subtitles in German, Spanish, Filipino, French, Indonesian, Italian, Brazilian Portuguese, Thai, and Vietnamese. Some languages may not cover every episode yet.
















First 10 episodes free, no sign-up