>>77334007It can only be speculated. Are they biboo's kin, or all part of the same whole? She is an entity born when the planet was yet young, the true nature of her origin lost to time and beyond knowing.
Setting biboo's goofy chuuni self-fanfiction aside, let's be real, there's no way dadseki hit this only once or twice. She has to have siblings beyond just broseki. Any immortal married to this would have sired enough progeny to populate a nation. 