Quick Answer
Step Sister is streaming on Crunchyroll. 2 episodes (~1h total watch time). Availability may vary by region.
Where to Watch Step Sister
Step Sister is currently on Crunchyroll. Keep in mind that catalogs change by region — if you don't see it on your usual service, check the other platforms listed here.
Confirmed Streaming Platforms
Subscription availability by JustWatch
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Anime licensing changes by region. If Step Sisterisn't on your usual service, try these.
About Step Sister
A renowned painter dies of heart disease while being married with Megumi, a woman much younger than he is. His son, Kyosuke, never liked that union and wants Megumi out of the house. Therefore Megumi proposes that Kyosuke can do anything he wants with her daughter Yuna, Kyosuke's stepsister, if he allows them to stay. Naturally, Kyosuke accepts. (Source: AniDB)
Full details on MyAnimePulseFrequently Asked Questions
Where can I watch Step Sister legally?
Right now, Step Sister is on Crunchyroll. That said, anime licensing varies a lot by country — what's on Netflix in Japan might not be on Netflix in the US. If your go-to platform doesn't have it, try the other services listed above.
Is Step Sister on Netflix or Crunchyroll?
It's confirmed on Crunchyroll. Netflix availability depends on your region — some countries have it, others don't.
Is Step Sister available with an English dub?
Dub availability depends on the platform. Crunchyroll has been expanding their dubbed library a lot recently, and Funimation (now merged into Crunchyroll) historically had the biggest dub catalog. Check each platform's listing for Step Sister.
Can I watch Step Sister for free?
Crunchyroll offers a free ad-supported tier for some shows. Most other platforms require a subscription, but many offer free trials for new users. Tubi and Pluto TV occasionally have anime in their free rotation too.