User blog comment:B214/Volume 23 discussion blog/@comment-78.49.82.128-20170426022646/@comment-31137559-20170426162325

I'm not saying that Issei couldn't become a Satan, but that he wouldn't desire to. And there are better people suited for the job. It takes more than being strong and being a hero to be a Satan. And with his workload in the future, I don't see Issei becoming a Satan as possible. And plus he wouldn't be able to compete in Rating Games. I'm not too worried about the harem part.