That said, Horaigon is wrong in multiple ways, and he doesn't appear to be aiming to accomplish anything. To begin with, his perspective is distorted by his interactions with the people he'd met prior--and those he spared. Of the people present/in the vicinity and opposing Hades, the only ones that could be considered "kind" are Horaigon himself, Hitamuki, and the constable who wept over Kimujina. (Assuming I'm not forgetting anyone.) Aside from battle maniac True and the elder Kinz brother, who's there for his job, you have the biggest contradiction in everyone's favorite not-pedo (lol), Kikuru. Pages 17-18 constitute the second time (if there weren't more) Hades has demonstrated no will to involve noncombatants, specifically Meidena; and on page 19, Meidena was effectively released from her ostensible hostage state. Page 20 showed Kikuru's response, which you could see in his expression--never mind his accompanying action: kill, kill, kill. (Who, then, is the one that can't be reasoned with?)
Second, there is a Latin saying: si vis pacem, para bellum. Translated, "If you want peace, prepare for war." No matter how much the feminine and the effeminate are disturbed by it, the truth is that violence inevitably becomes the name of the game after discussion proves ineffective (this includes nonviolent force, mind). No matter how good you are there will be people for whom righteousness is immaterial, or even objectionable--people who will bring harm to you for their own gratification and nothing more. Indeed, people who would kill you or your loved ones for a feeling, who can't be reasoned with any more than you could successfully meet emotion with logic--people on whom a mere spanking or stern words with an angry look won't have an effect. Sometimes, killing IS the only answer, which is precisely why the guards--Kikuru included--bear lethal weapons. I don't remember Hades' kill count, but I'm almost certain he's got a few on his hands--even indirectly. If this is the case, what's the difference between Hades and Kikuru, or any other guard for that matter? Furthermore, if what Horaigon said is true, then why is Meidena still alive? Why is it that the most she's gotten from Hades, aside from her history being read, was two warnings about her providing aid on a battlefield? Even Kikuru was dealt what would normally be a lethal blow by Hades--why was Hades stopping to wax wistful about a peaceful past instead of going bloodlust mode like Kikuru has, to finish that job AFTER killing off that helpless white mage?
The people who think communication through fighting is anything more than a violent, extremely simplistic expression of one's will (or emotions, as the case may be) are the ones who deserve Horaigon's implied condemnation--which, ironically, includes Horaigon himself. "Because we're friends" doesn't justify a bloodbath, however one-sided.