I Became the Mother of the Sub-Male Lead’s Son summary: Reincarnated as Elia, the daughter of a ruined noble, the protagonist struggles to escape debt collectors. One day, she saves a child from an attack, only to be mistaken for a kidnapper and taken to Duke Kaidens mansion. To avoid punishment, she becomes the childs nanny. Now, she must clear the misunderstanding and find a way to survive in her new life.