Grand Blue is an epic story about a girl who joins a diving club in college. Her uncle owns a dive shop where she lives during her college years. It's not long before she meets and falls in love with a handsome fellow named Akira. The two become friends and start dating. However, it's not long before their relationship starts to deteriorate.

Grand Blue is a manga series that centers on Iori Kitahara, a fresh college student who joins a diving club in her hometown of Izu City. She also dreams of having an idyllic college life filled with beautiful women.The manga is written by Kenji Inoue and illustrated by Yoshioka Kimitake. It is published digitally in English by Kodansha USA. A live action film adaptation was released in August 2020.