Comments of chapter undefined of Isekai Life as Ōtsutsuki

That sounds like foreshadowing for Yakou to decide to create an alliance with the fiendgods. It is perfect. In exchange for the Otsutsuki clan protecting the fiendgods from all beings who wish to hunt them down, they will pledge their allegiance to the Otsutsuki clan and perhaps become Myriaded members as well as reveal all of their secrets. While their bodies may still be extremely valuable, I bet that many of the survivors would be willing to risk an allianve if it means that they are free from their own prison.