[Changing the world? It's not a bad goal, not really her style... But there's something about this girl that reminds her of herself, even if it is a bit strange that she's never killed anybody before.]
"Nobody would notice huh? Well, I'm the same in this world, back home... There are a few people who'd care if I got killed, my family's pretty rich, but they wouldn't be that broken up. My boss though, well she's a damned weirdo to be sure, but that one has always looked out for me if nothing else."
[As for wanting to kill people...]
"I want to kill quite a few people, the thought of sinking my blade into any given person I meet crosses my path if I'm being honest. But, there's not much fun to be had if somebody isn't strong. And even I draw the line somewhere, "Murder" is fine, but a "Slaughter"? Now that's another story."
[Either way, time to address the girl's last point here... She's asking for help, in a subtle way to be sure, but Senri clearly thinks Shiki can do her some good, and she's not really seeing the downside to such a thing if this girl does half of what Shiki is thinking she does.]
"I'm not about making the world better or fair, not really sure how much I care about anything. But... There "Those who I can be with", and "Those I cannot be with", this little talk seems to put you in the former category, and moreover, you just might be in that rare spot of someone whom I actually like inside said category. What I'm saying is, I'd be willing to lend my blade here and there, so long as there's a strong foe to fight and kill I'm pretty happy at the end of the day after all."
[Shiki would offer her hand to Senri, there's a feral smirk on the woman's face as she stares into... She's not sure what to kill Senri yet, new friend? Perhaps, but maybe not. Bah, such labels don't really matter, in the end, she's just willing to offer her blade, now to see how it plays out.]