High School DxD: With Yûki Kaji, Yôko Hikasa, Shizuka Itou, Azumi Asakura. After being killed on his first date, idiotic and perverted Issei Hyodo is resurrected as a demon by Rias Gremory only to be recruited into her club of high-class devils.
Humans (人間, Ningen) are not deeply concentrated on in High School DxD, but they do play an important role in the Devils' ranking system as reincarnates. Largely residing in the human world, Humans are the most common species with the largest population