User blog comment:B214/Volume 23 discussion blog/@comment-31764731-20170825182223/@comment-1359322-20170827075728

It's possible to increase the Demonic Power.

"On Buchou’s graph, the Wizard category, demonic power, increases the most and her Power category increases fairly high as well. The other categories of Technique and Support are a bit above the mid-point, and are positioned in an average mark."

- Volume 6

Even more so since they're growing.

Also a major misconception is Sairaorg does have Demonic Powers, what he doesn't have is the POD.

"-He has barely any demonic-powers, and he didn’t carry the special trait of Bael, the power of destruction.

Each generation of the head was blessed with demonic-powers, and it was absolute for them to have the power of destruction. But Sairaorg-san was born without it."