As Lucifer the king of hell helps his daughter and his friends rebuild the hotel after the battle with Adam his twin sense kicking and and turn around and saw his long lost sister Nikki smiling

Lucifer smiling: nikki my twin sister how you been as hug Nikki tightly

Nikki collapses on him Lucifer was shocked

Lucifer: sis?! He saw her wings are burnt she’s bleeding her eye was taking out he realized she’s a fallen angel like him