[Xacual]

Originally Posted by MorningGlory

Spoiler for speculation from Anime.:

Even thou P-01s doesn't look like Horizon, but Toori seems to recognize her voice when she sing.

She seems to like to sing that song, I wonder does that has anything to do with the "envy" within her.

Not sure why that's in spoiler tags but she looks a lot like an older Horizon. Go back to episode 3 when Suzu is talking about the bells.