Up to his armpits in trouble, Densuke has been pulled into all kinds of sticky situations because he's in the Eiken Club with a bevy of busty girls, and he can never get any quality time with
his dear Chiharu, and now, Chiharu's sister Yuri seems intent on having Densuke all to herself and she'll do anything to make sure that Densuke's quality time is spent with her. Original.