User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-81.35.88.202-20180319214650/@comment-2208155-20180319222734

In the afterword it was revealed that this volume 25 is the final volume of High School DxD!

Don't worry. The story will continue. The next title will be Shin High School DxD. It will start from volume 1.