From Shoujo Crusade:
Kokone already broke up with 3 of her boyfriends because she can't do ecchi stuff. When she gets dumped for the third time, the first year prince of her school, the famous Fujioka Eiji has taken it to himself to teach Kokone how to do ecchi! Sparks will fly when these two are together. A romantic confusion ensues!
Extra Stories:
Amaku Nurete
Loving the Nude