Ai Yori Aoshi Volume 4- Truly Yours -Episodes 16-20-

From the Back Cover Romance is not dead, it's stalking Kaoru...First, everyone goes to the beach where Kaoru discovers that everyone but Aoi has worn a sexy swimsuit to attract his attention, then Taeko's cousin, Chika, tricks Kaoru into taking a bath with Taeko! Later, a trip to the zoo becomes a day with Tina, followed by a drunken night in a love hotel! Will Aoi really believe they simply fell asleep? Fortunately, Aoi has some hidden talents, some that she saves just for Kaoru and others that she uses to save the college festival!