Author of the story:

Sosh_022

Title of the story:

The Girl from Mahoukotoro

Characters:

Jessica, Tiffany, Taeyeon, Yuri, Yoona

Description:

Jessica finds herself starting anew at the greatest wizarding school in the world, Hogwarts. Can she handle the attention as a new student, the discrimination against Slytherins, and the trouble of making new friends? Throw in some love triangles, a mysterious, troublesome past, a supposedly non-existing mythical creature, some dark arts, and an angry Japanese magical council in pursuit and Jessica's life just got a lot more complicated.

Story link