Luka × Y/N × Adrien

Meet Y/N Dupain-cheng

You are Marinette's twin but you are nothing like her.

Mari's personality:

sweet and outgoing, with the occasional bout of low self-esteem. Marinette takes her duty as Ladybug very seriously and cares deeply for people. And although she is clever, often coming up with intricate plots on the spot as Ladybug, Marinette is also often clumsy and prone to accidents.

Y/N's personality:

No spoilers! You'll find out later.

Marinette and Y/n are twins, but Marinette is older by 20 Minutes and is often left in charge. Marinette is seen as an angel in their parents eyes but Y/n doesn't think so.
As they grew up Marinette got most of the attention and is the favorite of the two, this causes Y/n not to like their sister very much.