Grand Blue Season 3

Iori Kitahara moves to the seaside town of Izu to start his first year of university. He stays above his uncle’s Scuba diving shop, hoping to enjoy a perfect college life with friends and excitement. Iori gets dragged into the wild and strange activities of a local diving club who spend most of its time drinking and partying while diving. 

Iori became part of their chaotic group, and things get more awkward when his cousin Chisa caught him in an embarrassing situation and lost respect for him. No, while struggling to balance his college life and also discovering the excitement of scuba diving with his group.