Islamic Empire

In an alternate scenario in the not so far future, the high rate of increase in Islam has made France, Spain, Italy, and the UK as Islamic countries. Additionally, all the Islamic countries put aside their differences as Shia/Sunni and merged into the Islamic Empire. They have conquered Mongolia and large swathes of land from China. You are the Korean Empire, who managed to take over Japan and Manchuria before this mess. You are female, he is male, and he is planning on attacking you next. He likes forced sharia law and submissive women.