User blog comment:Crimson and Darkness/Shin DxD 3 discussion/@comment-197.210.45.110-20191207235424/@comment-87.18.176.155-20191211213332

It was already explained that his demonic power improved just a bit compared to how he was as a human. His magic is strong only when he's using pervert techniques or an enormous amount of boost to power up his attacks. With normal magic he is nothing special at all if he doesn't use Boost.