The main arguments in favor of refusing Rias are spoiledness, arrogance and selfishness. She allowed Issei to be killed and then reincarnated instead of talking to him. Also, the very fact that his girlfriend Tsubaki already says that there is no point in playing for another team. Ryota had already offered Sona to be a contract magician. Therefore, it makes no sense to play back. And for a weighty argument, leave him a man, give something similar to the Saiyan genes from the dragon ball. And let it continue to develop like Gilgamesh at maximum speed.
Morlock
ch 10 pick up 2 fallen angels
Reincarnating as a Raiser and canceling the engagement with Rias
Anime & Comics · badboy_5104