Iori Kitahara relocates to the coastal town of Izu for his freshman year at his university, settling in above Grand Blue, his uncle's scuba diving shop. With high aspirations and dreams of an ideal college experience, Iori joins a carefree Diving Club that frequents the place. Initially reluctant due to Shinji Tokita and Ryuujirou Kotobuki's upperclassman persuasion, Iori reluctantly participates in their bizarre party. Later, his cousin Chisa Kotegawa catches him, earning her disdain. Based on Kenji Inoue and Kimitake Yoshioka's popular comedy manga Grand Blue, the series follows Iori's misadventures with his eccentric new friends as he strives to realize his ideal college dream while also learning how to scuba dive.
Iori Kitahara embarks on a new chapter in his life at college, choosing to re...