Main character’s parents die before they could remember
Something gets sealed within the main character’s that kills them if extracted
Main character is mistreated as a child
They get taught at a school that teaches them magical skills
Two-boys-one-girl main trio
Snake-themed villain
Evil group of people after the main character
Main character marries outside of the trio
The other two members of main trio get married
Main character’s child gets their own spin-off media
Main character’s child befriends former enemy’s child
Anything else I missed Potterheads/Naruto Fans?
