I think it was made a bit obvious already, but yeah, the author seems to be hinting that Rias also was reborn.
I read mid spoiler and is close to this but is not what we all think about it still really cuteヾ(❀╹◡╹)ﾉ~
Oh, is that so?? I thought I was spot on, but it looks like things aren't as simple as I assumed （￣へ￣）
I will not spoil anything but trust me if is true the spoiler I read I think everyone will fall double for Rias
OMG I'm exciteddd ヾ(☆▽☆)
I think is obvious but maybe its just a coincidence, I have the feeling that Rias is in the same boat as Lippie they remember their past life for some reason.