[Because that's just what Adachi needs to hear to draw his gun and point it at the brat foolishly calling out to him. He doesn't hesitate, doesn't feel bad at all.

In fact, he laughs a little. What a stupid kid! "Wait"? Was he serious? Adachi has to laugh, now, and it comes out in bubbles. In dark, malicious bubbles bursting from his lips because this is just hilarious! This brat had the gal to sound guilty. He didn't imagine it, no, he definitely heard it. And it's hilarious!]

You're such an idiot, you know that? I should put you down right here and now for how stupid you are. And to think, I was just going to walk away, to let you off. Ahahaha! You've spelled your own doom, kid. But that's what you get, I guess, for sentimentality. You should've just let me leave.

Why didn't you?