This is an enjoyable film to watch, and if you're on the tail end of its theater run or considering if it's worth streaming, the short answer is it's worth seeing. I do feel like among certain fan circles the movie is slightly 'overhyped' but that doesn't make the movie bad, it is in fact quite good. I think the exploration of the main character's relationship with kamikaze piloting, and in turn both Japan's historical understanding of that phenomenon as well as the West's, is actually still more poignant and worth exploring than perhaps we might be inclined to give it credit for. It's hard to overstate how culturally significant the kamikaze pilots were during and in the immediate aftermath of World War 2; although we had Oppenheimer to remind us of the cultural impact of the bomb, for soldiers that lived during World War 2, it was the stories of the kamikaze pilots that left a huge impact, even for people not in the Pacific theater. Likewise, Japan has long struggled to articulate its historical relationship to kamikaze pilots, with the memorial there being a kind of hot-button issue for multiple decades now. This film perhaps doesn't offer a searing insight, but rather a kind of wishful alternate path to how Japan and the west feels about kamikaze pilots. I think what's particularly remarkable about this film, frankly, is the way it pushes against the grain--a lot of Japanese cinema, especially that designed for view by western audiences, tends toward a construction of victimhood due to the bomb. This film tries to grapple with the echoes of imperial desire both immediately after the war and, perhaps, now.
Honestly, come for the big cool depiction of Godzilla, but leave with a reflection of Japan's relationship to World War 2.