The Addams family are inhuman beings and a family of black magicians.
As a little black magician, Evie has reached the age of school.
So, in order to study better (do experiments), Ivey chose to enroll in school.
And his sister, Winston (Wednesday) entered the school as a teaching assistant.
As a reward for curiosity and thirst for knowledge, Evie learned space magic, and took her sister to travel through time and learn knowledge (actually causing trouble).
...
Voldemort: "How come you're not dead?"
Ivey was shocked: "Don't you know I can be resurrected?"
...
Gojo Satoru: "What the hell are you? You are neither human nor a curse."
Ivey was confused: "We are probably witches."
Winsty: "To be precise, the main bloodline is a witch."
...
Still to be added
Purpose: Treating others with sincerity will result in sincerity in return