Startup Idea : Story-driven mobile game for learning Japanese

The idea is to make a point'n'click adventure game for iPhone that simulates how you would learn Japanese if you went to the country, rather than focusing on boring flash cards and repetition of words without context. The idea is that you learn words and phrases by talking to people in the game, reading signs and deciphering messages. The main goal is to decipher a mysterious notebook to uncover instructions for how to find a secret at the end of the game.