User blog comment:B214/High School DxD EX/@comment-31137559-20170415033745

I wish that Ishibumi would make it very clear how the status of reincarnated devils'(or any other devils that had to rise up to the rank of high-class devil) children works. Like if a high-class reincarnated devil had a child with another high-class pureblood devil, would their child be high-class? Or if a high-class reincarnated devil had children with a low-class or mid-class reincarnated devil, would the child take the status of the parent who has the higher status? I really wish he would make that clear. For example, was Rudiger Rosenkreutz's son a high-class devil because of his father? And what about Tannin's son, Bova Tannin? Both Tannin and Rudiger Rosenkreutz are Ultimate-class devils and have their own territory. And would the child of reincarnated devils have demonic powers and the like just like their parents?

And the reason why I considered Ex a pureblood devil was because Issei is a devil in the Underworld regardless of his origins. I understand about how Issei doesn't have devil blood running through his veins and how Ex would be considered halfblood. But Ex would still be considered the heir to the House of Gremory if Rias was still the head in the future. Yet she retired as the head and handed over the title to Millicas probably before or after Ex was born. My reasons for why Ex would be considered the heir if Rias was still the head of the House of Gremory:


 * Issei is(will be) Rias' proper husband. Despite him not being a pureblood devil, he is still engaged to Rias. And plus he is going to take the name of Gremory. It would be kind of weird to allow Issei to be reincarnated as a devil, rise up in rank to high-class devil, allow him to marry a pureblood high-class devil, yet not allow his son to be the heir to the House of Gremory because Issei isn't a pureblood devil. If that was the case then they wouldn't even allow him to rise in rank or be engaged to a pureblood high-class devil or take the name of Gremory. Strength is important to devils. So would they really deny the son of the Red Dragon Emperor from becoming heir considering he's come up so far in their society? The only reason Ex isn't considered the heir because Rias stepped down before he was born or while he was too young and gave the title to Millicas.


 * About the line just automatically going to Millicas once he was born. By that reasoning, Rias wouldn't even be considered the heir to the House of Gremory. Sirzechs lost his position as heir to the House of Gremory, yet any children he would have would take the name of Gremory. So it was just the matter of would Sirzechs' child be born before his parents had another child. And Rias happened to be born first before Millicas. So she became the heir. And in the devils' society women can be the heirs of their house. If Rias was merely going to be a placeholder before Millicas came of age, it would have said so.

Well I'm just spitting out speculations like always. Who knows? Maybe she was just a placeholder until Millicas came of age. But I don't see them doing that because Rias was born first. And they wouldn't just take the title of heir away from her when Millicas was born. Maybe she just got tired of being the head of Gremory and retired and it automatically went to Millicas.