@Doomer
"a single tomahawk missile costs 1.5 million dollars to make while a hellfire costs 115k yet Japan is just using them like nobody's business. are they even able to make new ones? will these fantasy lands pay the bill for them?"
What are you talking about? The only weapons I've seen used are unguided M26 artillery rockets fired from their MLRS units last chapter and some 155mm artillery. Those old cluster munitions were considered inhumane and the Japanese declared they had destroyed their entire stockpile of something like 14,000 rounds of munitions and over 2 million submunitions back in 2015. Assuming Japan got isekai'd before they destroyed their old cold-war stockpiles, they probably have a few thousands rounds of M26 rockets available. They appear to have fired 36 last chapter.
Those old AH-1 Cobras can't fire Hellfire missiles. Those are older TOW missile system which the JSDF still have plenty of stock of from the cold war. Even the latest incarnation of the TOW-2 missile run about $85k (FY2019). The version they're using is probably one of the older models that ran about $15K-20K back in the late 80's. Those are pretty old 80's era anti-tank missiles and should not be a problem to build. In fact, it may actually be more of a problem trying to find people who built the last batch.
You have to remember, Japan is not a poor 3rd world military. They budgeted over $50 billion this year for military spending and they are capable of spending way more. Japan's GDP is the 3rd highest in the world, at a quarter of the US. They could spend up to $150+ Billion if they want to match the US percentage of defense spending by GDP.