There is an unnamed land where deafness is the norm. It's unknown to this day why people living in the land were born deaf. While this sounds troublesome, the locals have ways and methods around or combat it. For one major method is sight since none of them have blindness. The other way is touch for how the environment and things felt. Many locals were content of their situation, there are some who want to hear and left for a nearby city who can give their hearing through hearing aids. They managed to leave and receive hearing aids because they either have the money or given through donations if they wanted it. That's how they lived and managed their deafness in the land.
