Fantasy: Being Robbed of Destiny at the Beginning

The novel is too long now, so I am no longer a human being. At the beginning, he traveled through a fantasy world and was given destiny. As a result, he was robbed of his destiny and his original body of essence and blood right after he was born. He became a person abandoned by heaven. He managed to escape by relying on the remaining power of his origin. But he was taken away again, his blood was drawn, his skin was removed, his armor was removed, and he was trained with weapons. Later, he forcibly gave birth to two sons. Without a system, you are not invincible. If you are not happy, you must be smart. The protagonist can transform into other people's forms, but each form has its own characteristics and personality.