Qinlüe Guanxi

Charlie: "You saved my life. You're like a new parent to me now, please allow me a chance to repay you for your kindness." Sylvie: "Parent is a bit too much!" Charlie: "How about brother… or master?" Sylvie never imagined that the kid he saved from the trash heap would turn out to be a wolf cub attached to him for life. (Source: Bilibili, translated)