How could somebody like Tsubame be able to enlist in JSDF or any other armed force? She lacks even the slightest hint of discipline and self-control.
Misha's Father
What happened to Misha's biological father? Is he alive? Was Misha actually born in Russia? And why does she have surname after Yasuhiro?
Was Misha born into a wealthy family or is it thanks to her mother marrying Yasuhiro, that she's so filthy rich? Also how can a generic programmer earn so much money?
Locking up the room
Why doesn't Misha just lock her late mother's room so no one would be able to trespass?