|Function||To live for eternity.|
Immortality is a trait of having an indefinite lifespan, usually, or always, to the extent that those who possess this trait do not physically age up to a certain point.
Upirs develop this trait because they have taken their lives by their hands. 1/2 Upirs or any that are not full do not possess this ability. If an child Upir has died by their own hand and become immortal they will not stay that age but mature until they are at an older age and then stop aging.