User blog comment:B214/Volume 22 spoilers/@comment-180.253.117.56-20170416095635

I read the New Life in DxD Volume 22 that was great and awesome chapter. On that chapter, I read that Ajuka, Sirzech, and Azazel idea founding ExE (FBI, CIA, or MI6 version of Highschool DxD) to Issei. And for Sirzechs himself, he wanted Issei becoming leader of ExE just like J. Edgar Hoover (first Director and one of FBI founders).

Does it mean that Ishibumi-sensei has inspiration or refrences of FBI History or J Edgar Hoover, Charles Joseph Bonaparte, and Theodore Roosevelt? Or just coincidence?

Sorry for grammar