This is sum bullshit. I mean, I like turn off brain and enjoy type of mangas, but ain't this a bit too much? I mean, I know how scared is the queen of him after that but she was the queen. She should have a lot of political power and influence in order to rule the kingdom uncontested like that. Then why the hell is she not using it. She could have made up some bullshit in order to garner her subject's sympathy and hide herself within places she thinks is secure enough. It's a bit of a gamble since she doesn't know what the assaulter knows but it's exponentially better than publicly announcing her location at all time in the castle. She should have enough power to cover up her escape and prevent any intelligence from leaking out. Once she's able to do escape, she could take the mc's family as hostage. I mean, the mc IS in the house, but the family still IS relying upon the crown for survival. The masked assaulter has already established a connection with said family and it won't be hard to accuse them of any sort of bullshit she can come up with. Whatever she makes up WILL have an effect, riding on the fact that she's the hero of the kingdom and is the one holding the greatest power within it. If the effect on the family is enormous, then the masked assaulter WILL have to make a move. And if they could ascertain his position, they could then create a plan. It is true that the mc is OP af, however, his family isn't. They could be overwhelmed by forces of similar power with the family. I'm sure the queen has sympathizers among the people who stormed the demon king's castle. So, in this situation, if the queen could lure the masked assaulter out, then she could take the family hostage. It is true that their family has a lot of influence, but like what the father said at some point, they don't have any leverage over the queen. And the queen has the sympathy of over half the nobility. All of them can make any bullshit true. And I'm sure a hero's influence can overpower that of a mere duke's anytime of the day. Anyways, they won't be able to defeat mc in a fair fight, so they just have to resort in an unfair fight by exploiting the masked assaulter's emotions and relationships. The queen has too much spunk to accept that sort of defeat I say.
What I'm saying isn't even that complicated. Its TL;DR is Queen escape quietly=> Create bullshit against the house and in favor of the queen quietly=> Create a distrust to the house=> Escalate the situation exponentially=> Lure in the masked assaulter with a double=> Take the house hostage=> They're free to do whatever shit they want. I'm sure the queen will realize how much of a beta the masked assaulter is, given how much motivation he lacks when he's fighting, as a warrior herself, a hero even. It's a gamble, but it's better than taking a hit on your honor face down. She could've turned this disadvantageous position into an advantage. There is just too much hole in the mc's plan that I can't turn my brain off enough.