User blog comment:Maxx-DxD/Author is pushing stupidity too far./@comment-1359322-20140701061434

If you actually bother to read some of the past comments, you would've known that the reason why Ishibumi hasn't done that is because of the EDITORS, Fujimi Shobo's editors won't allow Ishibumi to cross that line.

In Volume 5, Ishibumi wanted to let Issei suck, yes suck, Rias' breast to power-up but his editors decide that it's too "extreme" and Ishibumi had to changed it to poke.

Also DxD is just a ecchi series it's not a hentai series.