ぐらんぶる

Iori Kitahara, a studious high school graduate, leaves his quiet life behind for the sunny beaches of Izu, hoping for a peaceful summer at his uncle's diving shop. But his laid-back plans are quickly capsized by the arrival of Kohei Imamura, a wild and carefree diving enthusiast who introduces Iori to the chaotic, hilarious, and sometimes dangerous world of scuba diving. What starts as an attempt to relax turns into a series of misadventures, from mastering diving equipment to encountering the bizarre underwater fauna. Through it all, Iori learns the joys of friendship, the beauty of the ocean, and the unexpected lessons life throws your way when you least expect it. (Unreviewed summary by Grok 2)