Place this clip at the very end of a betrayal montage, after the reveal shot, then follow it with an awkward moment sting as the closer, or precede it with Anime Ahh when the reaction needs to escalate first.
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This is a short anime voice clip, about five seconds long, built around Naoya delivering the line how cruel in a drawn-out, theatrical tone. It feels dramatic and slightly wounded, like an exaggerated complaint rather than real anger, which makes even a small slight sound like a serious betrayal to the listener hearing it.