So like...does Monika also have the hots for him? Is she hoping to be a mistress?
"You should really have a sword or something to attack with."
"Ah, don't worry. My shield can inflict instant death even while I'm defending."
"...Pardon?"
Now that I think about it, if he thinks the only one worthy of his sister is a royal, does he not know about the incident in her childhood? Because if the asshole prince and anyone who would support him are out, then Raphael is the only alternative, isn't he?