Akubi wo Suru ni wa Wake ga Aru

あくびをするにはワケがある

Japan, 2093. A rural town that used to be the most prestigious town in the world has long since sunk 30 meters under the ocean's surface. The story is a tale of a girl who takes part in freediving (diving without the aid of equipment to breathe), and the emotional growth she experiences. (Source: Anime News Network)