This series is ugly. Really ugly. I could ghet used to it towards the end, but I was still thinking to myself from time to time: so ugly!
Terrible design compared to previous sessions aside it was still fun. This series is much more shounen oriented than before. While I did cry rather often in previous series in emotional moments, even when rewatching them, it did not happen here. Here are no such strong feelings invoked.Instead, they bet all on boobs, fighting and more boobs emphasis. For all this, I feel it is just way more shounen oriented with extra ugly boobs. Issei is still power upping, it's not so sad and overwhelming with emotions as before.
Also, there is not much development going on in others Gremory peerage. 80-90% fighting is Issei doing.
We all hope to get another season in style of first three.