I ended up using the tools on Little Busters to get the files for a Komari system voice, and it ended up working out really well. I may upload some more of the clips later, but this is probably the best one I’ve found so far:
Making system sounds was the reason I started looking into this. Still haven’t gotten around to do anything concrete yet, but one day a piece of Kotori will be in every part of my computer. Every time you finish a download it would go: http://puu.sh/hguI7.ogg
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Yeah, I was using Shizuru until today. The Rewrite set is actually pretty nice, considering that it actually includes ALL of the heroines. Kotori’s was pretty top-notch too, so I would recommend it.