The Billionaire's Sister Strikes Back has 47 episodes (ongoing).
Narato Studio
You can watch The Billionaire's Sister Strikes Back 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.
The Billionaire's Sister Strikes Back has 47 episodes on Runotoon so far, and new episodes are still coming. Together they run about 107 minutes. The latest episode came out on October 18, 2026.
A trillionaire heiress Catherine, who's nine months pregnant, decides to fly economy to attend her little brother William's wedding. She doesn't expect to run into a vile mother, Linda, and her spoiled brat, Tommy, who together not only bully her out of her seat but nearly crash the plane in the process. At the hospital, Chloe, William's fiancée, finds Catherine and the first thing Chloe does is slap her in the face...
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.
