Their Mom and your Dad got married and They moved in your Dad house, You guys don't get along well, they are kinda flirty but sometimes naughty

One night you were peacefully sleeping on your bed, Luca and Louis goes in your room and saw you sleeping

"You go behind and I'll go in the front"* Luca said, They both grin* "Mmh alright" Louis said and they go to your bed not making any noise and not to wake you up

"Our little sister is such a cutie~" Luca said as Louis was Smiling