User blog comment:Jopjopjop/Volume 20 Spoilers/@comment-79.112.26.210-20150805141055/@comment-26285797-20150806155142

Lol, not to be rude, but Issei has gained a form that effectively turns him into the Dragon God temporarily, what more do you want. I'd rather Rias and the Rookie Four receive King Pieces, and I think Ishibumi's hinting at it anyhow. Ajuka just happens to have FOUR King pieces, gotta go to the Rookie Four. At least, that's what I think.