Can you recommend 3 - 5 animes in these categories?
1. Ecchi
2. Action / adventure
(I watch Netflix and Amazon Video)
And where can you watch highschool dxd?
1. Ecchi:
The testament of sister new devil
rosario vampire
A Chivalry of a Failed Knight
High School of the Dead
Date a live
Trinity Seven
Undefeated Bahamut Chronicle
2. Action / Adventure:
Seven deadly sins
Fullmetal Alchemist Brotherhood
Hunter x Hunter
Akame ga kill
Inuyashiki
Vinkand saga
3. DxD high school:
The first and second seasons are currently nowhere to be streamed
The third and fourth seasons can be seen on Anime on Demand and Crunchyroll