I highly doubt it. I don't see us going nearly an entire arc without Sayaka's trademark voice, and Clair/Yasu are pretty much synonymous. The alternative is to think that Shannon's love causes Beatrice's voice to change, even though Clair/Yasu takes the classic cackle and manner of speech from Gaap in the first world modification.
And they're no way Lion would get Beato's voice. Aside from being highly inappropriate, it'd spoil the twist of Lion's nature.
|