Do you know perverse anime on Netflix (not mega perverted as hentai but just plain perverted)
The Testament of Sister New Devil
Rosario + Vampires
The Seven Deadly Sins
Demonking Daimao *
Rosario + Vampires *
The Testament of sister new devil *
The seven deadly since
The Asterisk was (Gakusen Toshi Asterisk)
The irregular at magic high school
Overlord
Akame ga kill!
No game no life
Undefeated Bahamut Chronicles
Kill la kill
Gurren Lagann
Think that was it by and large. The ones with "*" are a bit ecchi-heavy. Hope I could help you.
Is not really an ecchi anime but the anime "kakegurui" is highly recommended & he very often indicates perversion.
Date a live
