This show was amazing to watch. The first two season we're really great but my only issue with this show was season 3. To me it seemed kinda off compared to the rest of the seasons. This was basically my only flaw with this show other than that I really recommend you give this a watch only beware you'll be greeted with topless women for some segments of the episodes in all seasons. Overall it's a really good show it has an interesting story, amazing characters, and great romance. I really hope in season 5 we will get a more romance between Issei and Rias. Since we really didn't get enough of there relationship as one would have hoped for but it's still a very good series to watch.