A considerable half of shoujo is about a playboy, who falls in love with some girl and stops being a playboy. The girl is so fragile, helpless, akward and so on, o that he has to protect and reassure her. But not here. Meet a reserved and well-composed Yumi Sakashita.
If he thinks that he can get any girl, he finds out that not in this case. But even if he finally manages to, he is the pet, not a even-ranked boyfriend.
The story tells us about the fussiness, that a playboy would feel if everything went just the way round to the situation we are accustomed to. Girls should think over the fact that in fact all boys are masohists ))
I really admired the scenes of sex (attempts of one, if precise), though for boys it IS frustrating.
I dared to put some extremely high marks for this manga due to its paculiarities, that make it outstanding (any other word wouldn't be suitable)
IMHO