If the Villainess and Villain Met and Fell in Love, Vol. 1 (light novel)  (English, Paperback, Harunadon Harunadon)

Despite her noble status, Brigitte contracts with the weakest type of spirit--and on that very same day, the prince publicly breaks off their engagement. No one shows much sympathy towards the once haughty young lady--except for the duke's son, Yuri, who attends the same magic academy. Yuri is feared for his incredible abilities and icy personality, but with him on her side, her fortunes might have changed...