Board Thread:General Discussion/@comment-29401121-20170524151017/@comment-29401121-20170527110336

Edit: Unlike Eas/Setsuna, Siren/Elen and Twilight/Towa (they have always been people/fairy/living and real creatures, Kiryu's sisters were artificially subjects created by Akudaikan from the very beginning and then they became real people only later).Be real and living beings of flesh and blood from the beginning and be subjects which created by someone with an intellect that transcends human capabilities are two different statements. So...this is the reason why they are not Precure.