Nana & Kaoru (Japanese: ナナとカオル, Hepburn: Nana to Kaoru) is a Japanese erotic romantic comedy manga series written and illustrated by Ryuta Amazume. It was serialized on Hakusensha's seinen manga magazine Young Animal Arashi (2008–2009) and Young Animal (2009–2016), with its chapters collected in eighteen tankōbon volumes. Three other manga series have also been released, as well as an original video animation and two live action films. Source: Wikipedia (en)