Let the FL escape the ML, let her reach her brother, let her give birth and survive, let her and the child live happily ever after.
Let the ML suffer, let him despair over her, let him realize that he was wrong about himself. Let him realize that he can feel emotions just like any other human. Let him realize he shouldn't constantly seek for a master to serve. Let him ache with the thought of never having a relationship with his child.
Don't be a wuss author-san.
Let the FL escape the ML, let her reach her brother, let her give birth and survive, let her and the child live happily ever after.
Let the ML suffer, let him despair over her, let him realize that he was wrong about himself. Let him realize that he can feel emotions just like any other human. Let him realize he shouldn't constantly seek for a master to serve. Let him ache with the thought of never having a relationship with his child.
And let them NEVER get back together.
Do not glorify toxic relationships.