Hey, she can teach him how to cook as a way to spend time together, don't you think? (๑๏ิ₃๏ิ๑) After this war, of course. It'll also be unthinkable for a future Emperor and Empress to use the kitchen though. Actually, yeah, maybe not.
I can feel Michael's pain though. I believe, everyone who has or had siblings have experienced this at least once.