yotsuba is a strange little green-haired girl who comes from somewhere to the left. it would seem that yotsuba was adopted by mr. koiwai while overseas. though the details of this remain unclear. they lived with koiwai's parents in the country. following his mother's death koiwai used his inheritance to purchase a place in the city, and the manga starts with yotsuba and koiwai moving in. yotsuba is incredibly energetic and amazed by the world around her, and before long she has adopted her neighbours as a extended family and is involving them in her zany adventures. yeah. i used the word 'zany'. so what? this is a sweet and funny manga series that is perfect for young people.