Wonder Boy(2001)

Fushigi na Shounen

A family, struggling to survive in Japan after the second World War. An orphan girl in London, working her fingers to the bone every day just to pay for the food on her table. A young man in a war-torn world, fighting without knowing his purpose for living. Across time and space, these strangers share just one thing in common-the wonder boy. A mysterious traveler who appears here and there throughout the ages, watching the triumphs and sorrows of humanity...

(Source: Yen Press)