Sore Ike! Anpanman: Bokura wa Hero is another movie from the Anpanman franchise, which is basically a huge deal in Japan. If you're not familiar, Anpanman is this superhero whose head is literally made of anpan (a sweet bread with red bean paste inside), yeah, it's as adorable and weird as it sounds. The character was created by Takashi Yanase and has been around forever. The whole thing is about being brave, helping people, and being a good friend. In this movie, Anpanman and his crew face some new problems and have to work together to save the day.
Like all Anpanman stuff, Bokura wa Hero has that gentle, colorful vibe that little kids love but also makes longtime fans nostalgic. You've got all the usual characters, Shokupanman (bread man), Currypanman (curry bread man, naturally), and the rest of the gang fighting bad guys and learning lessons about what it means to be a hero and why teamwork matters. The animation is bright and cheerful, and it's got that wholesome, feel-good energy the series is known for.
Anpanman has been a part of Japanese culture since the late 70s, there are tons of TV episodes, movies, books, toys, you name it. This movie is just continuing that tradition of teaching kids to be kind and brave. It's why Anpanman has stuck around for so long and why Japanese kids (and parents who grew up with it) still love it.