Kiyoshi sighed with relief at the man's words, even if his general attitude was still exceptionally grating. Now that he knew his mother would be safe he didn't need to protect her from him.
Still, the guy's general attitude was seriously angering Kiyoshi, especially the rude sign he had made at Kiyoshi as he turned to leave. He clearly had no concept of “politeness” or “niceness”, and nor did he seem to have any idea how to actually talk to real people. In short, he was just an asshole.
Before Kiyoshi could respond, though, the blond woman called Forest spoke up.
"Well, hello there poppet”, she said as she waved at Kuro. Without waiting for any instructions, the little shadow returned the wave politely, causing Kiyoshi to smile.
Then, she turned to Kiyoshi.
"Well, its not an easy question to answer, Kioyshi. Had I'd been in your shoes I probably would have done something similar to protect my friend. Or rather, incapacitate him until I got both sides of the story. Then again, I've been doing this thing for a very long time”, she said.
Then, tilting her head, she added, "Being a superhero isn't an easy thing, poppet, but the idea of saving others is a rare and beautiful thing. And you have something that people like the Shirou on the rooftop and I don't. You have family. You have someone to support you when you need it. With some learning, you could be a wonderful hero, but something that every hero needs to know is they have to listen."
Kiyoshi smiled at the woman's kind words.
“I'd like to have incapacitated him, Forest, but I don't have the power to do that, especially not in an emergency situation. All I have right now are my swords, and swords aren't the best weapon if you're trying not to cause wounds. Plus, I did cut his arm, as long as he got treatment he was going to be OK”, he said.
Then, he turned to his retreating opponent. “Look, moron, perhaps what I did wasn't the best choice, but you left me no other option, and no time to think. Attacking you wouldn't have stopped you getting a shot off, and the best outcome of that would have been you shooting randomly. If I had not acted Connor would be dead, and I am not going to apologise for saving someone's life.
As for my mother, it's good to hear that you won't attack her, but how was I meant to know that before? Sure you said you wouldn't do anything if my mother looks harmless, but Connor looks harmless to me, yet you still attacked him.
How am I meant to know what you will see as dangerous? We're not from your world, we don't know how your magic works.
And, you threatened my friends, that is no different from threatening me personally. Like Forest said, any true hero would do the same to protect those they care for.
And, no, killing innocent people 'just in case' is not what a hero does. Heroes do not kill except in self-defence, or if the person they're killing deserves it. That's what my dad told me, and I am not going to take the word of a rude asshole who I've barely met and an amoral murderer over my own father”, he added.
Then, he turned back to Forest.
“Thanks, Forest. I know being a hero is difficult, and I know that I can't do it on my own. But, I am not going to take that idiot's advice over my own father, and I will never abandon my friends and family like he seems to expect. And, really, I don't understand why Shuya thinks can lecture me about this, because he is certainly no hero. His idea of a hero is someone who stands there and watches whilst he murders random people....”
