Go with the clouds, North-by-Northwest(Hokuhokusei ni Kumo to Yuke)

Go with the Clouds, North-by-Northwest" (Hokuhokusei ni Kumo to Yuke) is a manga series by Aki Irie. It follows Kei Miyama, a high-school student investigating the mysterious disappearance of his grandfather, an Arctic explorer. Uncovering clues, Kei sets off for the Arctic himself, experiencing adventures and discoveries.

MANGA