Snape was a master of potions, but his favorite was dark magic.
After having his daughter, he majored in Potions.
After her daughter found a partner, she began to practice black magic on the side.
My daughter's partner heard that the Animagus was a dog, and it was said that her last name was Black!
Snake began to specialize in black magic that kills people and leaves no trace on their bodies.
——Derived from Mary Sue, please enter with caution.