Amanchu! is a Japanese slice of life, sports, scuba diving manga series written and illustrated by Kozue Amano. Futaba upon moving to a seaside town, she gazes out over the vast expanse of sea captivated by its endless possibilities. Unbeknownst to Futaba, her quiet contemplation catches the attention of local diving enthusiast Hikari. Finding herself in the same class as Futaba the next day, Hikari is drawn to her quiet and shy demeanor and affectionately nicknames her Teko, sparking a tender friendship.