Rika Kawada
Futari Ecchi (Click Me)Yura's 20-year-old sister. Sexually experienced and rather promiscuous (to the point where, early in the series, she keeps a boyfriend and three "sex friends" – in addition to miscellaneous flings), she constantly teases and goads both Makoto and Yura into improving their "night life".
Searching for comments, brrrrr