Kasuto

Kasuto is the name of two towns in Adventure of Link. The original town of Kasuto was attacked and destroyed by monstrous Moas, forcing its people to flee, leaving behind only a single old man. A new town of Kasuto was founded, hidden in the woods in the far east of Hyrule. Its townsfolk guarded the Magical Key as well as a powerful magic spell and valuable magic container.

It is often noted that Kasuto is the only town name in Adventure of Link that does not have a similarly named character in Ocarina of Time. This, as well as unused data found by hacking the game cartridge itself, has led to speculation that another sage with the name of Kasuto may have at one point been intended for the game.