The 21st installment of the series features extremely sensitive sports girls! Girls from the "tennis club," "gymnastics club," "cheerleading club," "track and field club," etc. are attacked at the library they stopped by on their way home from club activities. They are made to feel pleasure in a situation where they can't even make a sound, and their love juices start to string out of their pussies! When they are penetrated from a cowgirl position, they gradually start to grind their hips! The girls from the club activities are so turned on that they lose their senses... they use their "incredible hip movements" to repeatedly cum in the cowgirl position!