Several countries have in the past banned ruling queens, but lacked any requirement that the king be male. This led to King Anna of Poland, and King Mary of Hungary.
@AmericanButterfly Germany, Germany, you don't know what you're getting into. Us Asians are a wacky bunch, especially when it comes to family. Also I'm pretty sure if Germany introduced his sister to Brother Japan, she'd flirt with him by crushing him
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