>>52253573The game gives you all the pieces to figure this out, anon. Giacomo was said to be a nerd and had Nemona's student council president position before she got it. The students typically don't like the person in that position because they're a rule-enforcer. She also comes from an affluent family, but they're always busy with work so she's lonely. That's why she likes Pokemon so much, since they're her company. And then you have Arven point out that she annoys her classmates because of her always wanting to battle. She likely saw potential in the player and hope she can convince them to be a friend who shares her passion and interest.