Becca: I need you to promise me something. I need you to promise me that you will save him no matter what, and you will get him back to me.
Butcher: Yeah, of course.
Becca: You realize this isn't just about me, right? Like, he, he, he can't grow up like Homelander. You have to think of all of the people out there that he would... Swear to me, then. You swear to me on your brother's soul.
Butcher: I swear to you. I swear to you on Lenny's soul.