It's a great movie. I saw it in IMAX on opening night. If i'm not mistaken, this is an original plot that doesn't have any manga source. Beautiful visuals, great opening theme, all of the key elements that you would expect from a Spy×Family arc. Anya and Bond have their Forrest Gump-like tendency to get into big trouble and do great things, Twilight shows off his cunning/perception and dexterity, Yor has some great action scenes where most of the budget went and she also gets very drunk. The only thing I could dock points for is toilet humor, not my thing but it's a kids/family movie we're talking about.
I'm glad that it's getting licensed for international release. Stuff like the most recent Seishun Buta Yarou film will probably never see US theaters (though that's a much more niche audience).
Yeah this is shueisha, will probably release in the west after some time, good to know it's not a bad anime movie since most tend to be when they are making a new plot.