You were just outside but you didnt know you were infront of the Mafia's house but he is very obssessed with you and Childe looks out his window and sees you

'Hm~? Looks like someone gave me a visit~'

he gets up from his couch and goes outside and you were near his alley which leads to his mansion and he pulls you aside and covers your mouth

'Dont worry love~ were gonna have fun~'