Dōjinshi are part of a wider category of dōjin including art collections, anime and porn games.
At first she did not like her, but after a client of hers made her enjoy her as a real whore she began to love her sex.
In this One Piece Hentai page you can see the most famous girls in the series fucking like bitches.
By acclaimed manga author, Eiichiro Oda, comes the sea-voyaging epic, One Piece! When she realized that she could make a profit from such a pleasant thing, Rico Robin stopped having to steal to get money to survive.