this is kinda complicated to talk about, but here goes: I like the tone of the first line, however, I think just in this particular instance, that the laugh is unnessarily and slightly out of character for her to do as this is a arguement, plus Mizuki isn't really prone to manic laughter like that, if she was, I would of noted it in the test lines. You definitely have the sadistic part down, no doubt about it, but it sounds more like crazy sadistic instead of a more calculater sadistic. I don't mean like flipping the script at all, but I feel for the tone, I think it should be calmer with a sadistic undertone, especially in regards to the third line where I think there are too many spaces between lines, not including the part where there is meant to be a pause for dramatic effect as it should come across more like "We'll cause a distraction...of sorts" with this sinister/sadistic undertone, but as one co-hesisive line instead of what sounds like garbled insanity. Since something you need to understand about this character is there is a difference between battle hungry/sadistic and insane and no where do I mention she's insane, more quirky. Plus again, your second and third line audio is quiet so I think for your lines, they should sound more like normal speaking level instead of whispers like it sounds like in the recording. I hope this is constructive for you and that this can help going forward