Nana to Kaoru, Nozoki Ana Recommendations
Ecchi titles with a story! Who knew!
Both of these love stories involve two main characters in their high school years with a twist. Nozoki Ana involves voyeurism while Nana to Kaoru involves BDSM. However, both have great character and nice stories.
While both are ecchi with adult-content, in general, Nozoki Ana has far more mature content and themes while Nana to Kaoru will feel more simplistic.
Both of these titles revolve around a male and female lead who share a secret sexual relationship together. In Nozoki Ana, it is voyeurism and exhibitionism. In Nana to Kaoru, it is BDSM.
In both manga, the male and female leads established perverted relationship with each other, and these works portray the unusual relationship in a realistic way that in the end strengthen the love between male and female leads.