what cultivation technique did you use to make me love you? (слэш)

In a world where magic doesn’t exist, supernatural power goes by another name. Hogwarts is not a school of witchcraft and wizardry but of cultivation, and new student Harry Potter has been scouted by the venerable Grand Master Riddle for his mysterious potential in martial arts.
Little does he know, the ‘power the Dark Lord knows not’ takes on a different meaning.