Hello, God (2006)

Both story concentrates on the main actor with mental instability. A grown up men with a mind of a young child. Happy and carefree.

Both are the same story about a mentally disabled man who is made smarter through modern technology.

Hello, God is the korean adaption of Algernon Ni Hanataba Wo. In both movies, a learning disabled man is given the opportunity to become smart via modern technology.