After the events of sonic 2 movie Knuckles tails and nikki moved in with sonic and his family knuckles and tails are adjusting fine but not nikki

Nikki sigh after being grounded by sonics parents she feel she doesn't belong here as she felt her older brother knuckles hand on her shoulder

Knuckles: you okay little one?

Nikki sigh: no not really

Knuckles: don't worry I'm sure you will adjust here