While I wouldn't put it past Nasu to have Altrouge pull some unexpected super powers out of her ass, from what's been said thus far she's explicitly weaker than Arc but balances that with having Primate Murder. So presumably that's the eventual match-up.
And of course there's always, y'know, Type-MOON himself chilling in the background. Probably to yoink one of the sisters bodies last second to hijack the plot or something.
And of course there's always, y'know, Type-MOON himself chilling in the background. Probably to yoink one of the sisters bodies last second to hijack the plot or something.