High School DXD, Vol. 9: Volume 9

High School DxD, Vol. 9 (High School DxD (manga), 9)

High School DxD, Vol. 1 - manga (High School DxD (manga), 1)

High School DxD, Vol. 2 (light novel): The Phoenix of the School Battle (Volume 2) (High School DxD (light novel), 2)