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Sumikko and friends discover a pop-out picture book in the basement of Cafe Sumikko, their favorite coffee shop. As they look at the book, the pop-ups suddenly start moving and Sumikko and friends get sucked into the book.

How to Watch Sumikko Gurashi the Movie: The Unexpected Picture Book and the Secret Child Legally and Safely

If you want to stream Sumikko Gurashi the Movie: The Unexpected Picture Book and the Secret Child through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry Sumikko Gurashi the Movie: The Unexpected Picture Book and the Secret Child films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.