These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Foe Romance Subtext: Buckets and buckets of it. Enough, in fact, that it drives the entire plot.
I Am Not Shazam: people who are not familiar with the film tend to assume that Bowie's character is named Mr. Lawrence.
Nightmare Fuel: The scene with the Korean being forced to commit seppukku, followed by the Dutch soldier choking to death on part of his tongue which he has bitten off and swallowed. Way to ram home just whose side you're supposed to be on in this film.
Squick: Hara's description of the incident with the Dutch soldier and the Korean falls into this category.