It’s winter and Eriko and gang are up to their usual silly antics again! They’ve got new tricks to survive their all-girls high school days, with crazy cures for the flu, new and improved heat protection methods, make-over tips, and how to survive the school health check! And when spring break comes along, with nothing to do the gang pesters Ayano and her boyfriend with a torrent of sexual questions to broaden their virgin minds. It's the blind leading the blind in High School Girls volume 4!