Y/n Nott is Theo Notts little sister she is 16 and he is 18. Mattheo Riddle and Theo Nott have been best friends since they were five. Matheo is the same age as Theo. Mattheo usually teases, play fights, jokes, and playfully bullies y/n, like his own little sister but lately he notices that y/n is looking more mature, hot, and not a kid anymore.