Under the Turquoise Sky

ターコイズの空の下で

Also known as Turquoise no Sora no Shita de, Номин Тэнгэрийн Хязгаарт

Takeshi grew up spoiled in an affluent family. One day his businessman grandfather Saburo sends him to the grasslands of Mongolia where he is to search for a daughter born out of Saburo's relationship with a local woman after the Second World War.