Rukia Kurosaki

hmm...

I'm not sure what you mean.. but, I did find something.

I figure Kurei did it now because you said she and she's the only left handed she besides Yamada who dies with the same MO.

So, Hitomi was dating Kanda, Yamada did date Kanda.. with Hitomi away maybe he'd be with Yamada again, but Kurei wanted him, that's why she verified his alibi too.