From my YOI omegaverse Au

Jean Jacques Leroy junior is a playboy and legacy figure skater, best friend of Hanari Nikiforov Katsuki. Because of his looks he tends to get a lot of attention, well except for the only person he wants it from. Liliya Katsuki Nikiforov, Hanari's baby sister. She doesn't like his flashy nature and thinks he's arrogant but slowly she warms up to him and eventually likes him back.