User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-32252462-20180508103013/@comment-28884330-20180508185004

You're misunderstanding what Shonen means, and conflating it with the "nekketsu" genre. Shonen is not a genre for stories, it's simply a demographic. It shows what public the story is primarily aimed at. DxD is a shonen by virtue that its main target audience is boys, ages 12 to 18. People outside of this age and gender demographic can still enjoy the story, but it is mainly aimed toward that group. Shonen is not as young as you imply it is, and seinen is older than you probably think it is. Also, DxD is not "way too pervy". At most, DxD has boob grabs, skinship and little more. That's normal stuff at most. Take a look at Masou Gaken to see what "way too pervy" is.

You could have some amount of truth by saying DxD is not a shonen simply because LNs are not categorized that way (LNs are mostly just divided in male, female and adult demographics. DxD being in the male one). However, that is not true. The DxD manga was published in a shonen magazine, Monthly Dragon Age. So yes, DxD is actually a shonen. The demographic, after all, is determined by the publisher of a work. Not arbitrarily.