If you're looking for manga similar to High School DxD DX (Light Novel), you might like these titles.
There exists an extrasensory perception beyond a human’s five senses known as Sensis. The Tournament City Ludenz was situated on an island specifically for the study of Sensis. Here, I lead life in an inconspicuous manner as a barely managing student in order to hide an ability which I did not want others to find out… However, due to a certain happening, I was restrained by the ultra-sadistic honor student, Kokonoe Mizuna, and forced to join a team tournament where they battle it out with their abilities. “One can draw out greater power from their Sensis by indulging in their fetishes. That’s why, I wish for you to help me out. Fufu, you know the meaning of this picture, don’t you?” “I’m not one of your kind, and that’s not even a request, is it!?”
A young girl idolizes the world-renowned S-ranked butei Kanzaki H. Aria and plans to follow in her footsteps. However, her test grades her out as only an E-rank! All is not lost, however, as Aria agrees to give her some pointers. Can Aria help this newcomer become a first-rate butei?
Three quarters of the world is the world of the dead. The world has been invaded by phantoms. One day, a boy named Nagi finds in the mountains of scrap wood a mechanical teenage maid girl. He immediately takes her home to repair her. The first things that Elise, this mysterious mechanical maid, says is, "Good morning, Nagi." Who is this mysterious silver haired girl? The fate of the world rests in their hands.