Jessica's life was perfectly fine and normal, until the day she met Tiffany 

Tiffany Hwang ;

22 years old, she's a dropout witch, she couldn't pass her magic exams so she moved to Korea, she's living her mum and dad, Sooyoung and Hankyung. Sooyoung isn't a witch but Hankyung is, she becomes Jessica's best friend and she trusts Jessica with her secret, and later on someone else finds out. She's a very bright person, she's always so happy

Jessica Jung ;

22 years old, she's captain of the girls basketball team, she admired by boys and girls by her cool and calm image she tries to keep up to impress Lee Donghae, she's the only one who knows about Tiffany's secret of being a witch.

Lee Donghae ; 

He's 23 years old, also attends SM uni, he's head of the Study Body, he admires by a lot of girls, and one of them is Jessica  Jung but he doesn't know it, he likes Jessica because she isn't like other girls who obsess about him, he's living by an nice guy image to impress Jessica

Choi Siwon ; 

23 years old, he's also attends SM uni, he's captain of the boys basketball team, he's popular among most girls, and boys look up to him as a great basketball player, he's one of Donghae's good maters. He started to develop feelings for Tiffany later on

Lee Sungmin ; 

23 years old, he's Tiffany's childhood friend, he loves to tease Tiffany and Heechul , he lives in the magic kingdom but he decides to move down to Korea for a reason. He's has had feelings for Tiffany for a long time

Lee Sunny ; 

she's 22 years old, she also attends SM uni, she'll come on later on the story

Kim Yesung ; 

A boy who believes in witches/wizards and he is for sure that Tiffany is a witch and is trying to get proof, he also attends SM uni

Kim Heechul ; 

Tiffany's cat who can speak and can also turn into a human, loved by Tiffany's classmates