あまんちゅ！

On the sun-drenched shores of a coastal town, Futaba Ooki, a reserved high school freshman, feels out of place in her new life by the sea. Everything changes when she meets Hikari Kohinata, an energetic and free-spirited girl with a passion for scuba diving. Drawn into Hikari's vibrant world, Futaba joins the school's diving club, where she discovers the breathtaking beauty of the underwater realm and the thrill of exploring the unknown. Through diving, Futaba begins to open up, forging deep bonds with Hikari and their quirky clubmates, while learning to embrace change and find joy in the present moment. (Unreviewed summary by Grok 2)