"You can try anything you want, you'll never be equal to a Slytherin." Since first year, it has been nothing but a constant fight between Kim Hong-Joong and Park Seong-Hwa to prove which one of them is better. So much clashing has never been just rivalry. AU!Hogwarts Pairing: SeongJoong/Matz [Ravenclaw!Kim Hong-Joong x Slytherin!Park Seong-Hwa] - WooSan Warnings: Rivals to Lovers, Hogwarts AU, OoC, Romance, Fluff, Fantasy