What does DxD mean?

Related questions

1. Is highschool DxD season 4 over?
2. What does OAD mean in anime?
3. Will there be a fifth season of high school DxD?
4. Is hisoka a Phantom Troupe?
5. Is High School DxD over?
6. Will there be Season 4 of highschool DXD?
7. What ova means in anime?
8. What is highschool DxD hero?
9. What chapter did HXH end?
10. Will the HXH Anime continue?

Tags

1. #light
2. #dragon
3. #volume
4. #group
5. #devils
6. #angel
7. #fallen
8. #revealed
9. #terrorism
10. #novel
11. #factions
12. #organization
13. #meaning
14. #which
15. #different
16. #downfall