Hibiki Tsubasa Chris Kanade and Miku:

Maria Cadenzavna Eve:

Shirabe and Kirika:

Prelati Saint-Germain and Cagliostro: (So saint use alchemy to turn saint prelati and cagliostro into girls but would that mean they would have to give something up?)

Serena Cadenzavna Eve: (I look it up and it says shes 13 but thanks to being in cryogenic stasis she looks 13 but her mind is maybe at 16 or 18?, I don't know for real)

Elfnein: (I look it up and i have not from on what her age is at, So from the looks of it she maybe 15 I think?)