Grand Blue Dreaming manga volume 4 features story by Kenji Inoue with art by Kimitake Yoshioka.

Having raised their funds for the diving license boot camp, Iori and the gang finally make their way to Okinawa. But their joy is short-lived, as what awaits them there is the bane of all morons: an exam. To combat this dread, the antics of this nudity-loving diving club are only going to escalate in response!