Arcana/Confidant: Lovers
Yukari serves as the "default" love interest in P3, and she's an interesting contrast—kind, but prone to tantrums, popular, but afraid to get too close to anyone. Without spoiling anything, let's just say that 3's ending affects her personality in FES, leading to some unique character development.
And by the time Arena rolls around, she works as a model and portrays the pink Phoenix Ranger (a parody of Power Rangers), showcasing her good looks and charisma.
10/10