Rather than assigning a random holy blood each time, the 12 bloods are shuffled and each unit with a particular holy blood (either minor or major) will get a specific different holy blood instead. For example, if Sigurd has major Fala, his dad will get major Fala too, while Ethlyn and Oifay will always get minor Fala. Moreover, no other character with holy blood will have major or minor Fala.