So. The prequel to this game was dead or alive xtreme beach volleyball. The volleyball wasn't really the main feature though. It was more of a glorified lesbian dating sim. The aim of the game seemed to be to gather each of the 147 swimsuits with each of the 8 or so girls. Sometimes they wouldn't be in the right mood to accept your gift, so you'd have to give them strawberries or toys they liked so you could give them the swimsuit.
totally awesome game btw