Raised in chains under the Tenryubito a boy from a nearly extinct race now will establish his race, make them known again and break any chain he sees on his path. And if becoming a Yonko seems needed for it, well, Pops is already old anyway and someone ought to replace him eventually (OC-SI, Fanalis OC, characters from other franchises, harem, OP as he intends to become a Yonko)