User blog comment:Crimson and Darkness/High School DxD DX.5 discussion/@comment-105.108.201.189-20190331224600/@comment-28884330-20190401005142

That's how Miyama Zero draws her. Lavinia in Slash Dog is drawn by Kikurage. They look different because they're drawn by different people, Miyama Zero for DxD and Kikurage for Slash/Dog.