Cream grew up with her mom and sister in torrance, however since her mom was always working she was mostly raised by her sister.
\Cream grew very attached to her sister and it was rare to ever see them separated. she only started taking a liking to cars because of her sister, to be honest she still doesn't understand it but it makes her sister happy and that makes cream happy.
Cream started modeling for tomodamai only because her sister is doing it. like we said she loves her sister and will likely never leave her side.