@SirAllen Japan doesn't have an army only a self defence force. Their main defence lies with allying with the US - such as having US army bases there as well as with the US Naval fleet(s).
It's in their constitution I believe not to have an army anymore. I don't know if this was a condition of surrender during WW2 or not but that's why they only have the defence force.
If the other world doesn't have modern military then our nuclear, biological and chemical weapons of mass destruction would ruin them before we put a boot down on the other side.
On a different note, it doesn't sit right with me the MC got all the attention and the Virgina got the shaft at the end despite having the opportunity to choose whoever they liked.
@oa3856 yeah that was forced AF writing. If anything they'd still jump at the opportunity, maybe say "if you're ok with me I'm interested in X" at worst.