H2O's ingame sprite.
The chemical formula for water.
H2O is the protagonist of the game Kaeri Yume (帰り夢). Her name is the chemical formula for water.
H2O has shoulder-length dark brown hair with blunt bangs and worn in a hime cut. She wears a grey sleeveless collared dress with a light grey horizontal stripe, light grey shoes and a ribbon tied around her neck.
Not much is known about H2O's personality.
Not much is known about H2O's past. She is travelling on a bus to some unknown location.