She was surrounded by children... and not just the literal one in front of her. The kid was arrogant, inappropriate, and just overall unpleasant, hell he even attempted to kiss her, granted it was only on the hand... Rena could easily reason why Noboyuki would lose his temper so quickly with Ryuma, she also had to consider their brand new relationship status right? Although that was still no reason for the hero to actually lash out at their rude guest, she'll have to deal with him later. Rena's temperament changed from the gentle expression of their initial encounter, to one of scorn, diplomacy was out of the picture at this point. Even if the boy was only slightly taller than her, Rena mustered her gravest stare, not even Noboyuki had seen it ever before, the kid may be able to intimidate, but she? She had a lifetime of authority to bear down with. 

"You are stupidly bold, not even that, you are arrogant to such an extreme fault I am already unable to stand your presence. First, you lie about your own home, and that lie was unraveled in the manner of seconds. Second, you insult a dear companion of mine who as stayed loyal to me nearly to the extent of death on multiple occasions, he who has shown true proof of his strength and martial prowess, however you boast without the slightest scrap of real evidence thus far. Third, you dare to mock the idea of chivalry with your woefully horrid attempt at a kiss of my hand, its disgraceful beyond all measure of a knight's code of honor. And last, you make ALL of this seem as if it were a game, that in of itself insults me and every single citizen of my kingdom to the highest degree, this cause is for our future, the future of everyone. You already seem to have thrown that notion away, it is down right disgusting to call you a human being if you are unable to comprehend the serious nature that my home finds itself in."

The last word seethed from Rena, she didn't want to do that at first, but now... well now that changed, she meant everything she said, Ryuma had already shown himself to be someone she would be very much unwilling to even think about cooperating with. Now though, she wasn't done, no not yet. Rena turned around to face Noboyuki himself, he had made some mistakes as well.

"Then there's you... Noboyuki I expected more from you, much more, did you understand what I meant by 'to be more diplomatic?' The point was to handle this in a civilized manner without breaking out into petty bickering. You allowed this boy to provoke you into arguing with him, you should've shown restraint because you are more than strong enough to do so, I know that for a fact. There is also the subject of you pushing away his kiss, it was uncalled for you to do so, I am able to decline it myself... it shows that you care, and I can appreciate more than perhaps you really know, still it was not the right way to show that you care. You are strong, intelligent, and loyal, these are some of the many, many reasons why I fallen in love with you, so act as the better man in the future, you are very much able to do so."

Rena reached forward to pat Noboyuki on the back, she hoped that her eyes alone were able to convey that while he did annoy her, and disappoint her, that she still loved him no matter what. Rena stepped back to allow her reprimanding to sink in, this was the end of their fighting, no more. If either of them were to make another attempt at continuing, she made a mental note to strike down whichever one decided to do so... even Noboyuki, she did not have the patience for this.