The problem is that Highschool DxD as well as some other shows like Daimander have the most ridiculously fake breast ever.
It's such a "turnoff" to watch an ecchi show like that. KLK did it and I'm ok with that(because ass physics), but DxD is just so plain and vanilla I can't.
I actually agree with you there. After marathoning it I didn't feel the need to fap for like a whole month. I think it's just that DxD is so cliche that it's actually good (if that makes sense) I won't deny that I would watch the whole show even without tits though.