Newborn vampires were impulsive.
They cannot control their strength, especially after just turning undead. They must also face the choice of killing human beings to survive. Many newborns went berserk during this period of transition and would be imprisoned in the coffin for a very long time. This process, called [Restriction], was when other older vampires would watch over them. These elderly vampires would nurture them for a period of time ranging from several years or even decades. When the newborns gradually stabilized and their emotions became controlled, they could finally be released.
This was an arduous process.
