Both daughters would not be twins (or at the very least, identical twins) since they both come from different mothers, identical twins are born through an egg forming two embryos. Depending on how you perceive it, though, the daughters could be considered fraternal twins to some degree since the daughters are technically biological sisters (as the mothers are technically the same person) and fraternal twins being children conceived from two separate eggs being fertilized during pregnancy. Also, I'd imagine that Shiroko Terror's daughter would have the same halo as her mother, but lacking the shattered parts. But that's mostly just up to your own interpretation on how students' halos work... But hey, that's just a theory. A game theory. :Watamelon: