User blog comment:B214/Shin DxD 1 discussion/@comment-39.50.10.5-20181002215606/@comment-108.7.146.103-20181002221521

We still need to have Volume 25 of DxD to be finished first, not to mention DX. 4 needs to be done. There are also several short stories and spin-off stories that are completely untranslated.

http://highschooldxd.wikia.com/wiki/Short_Stories