"Dad, I've never thought about these issues, and I hope you don't misunderstand our intention for coming back this time. Deep down, you must understand that we harbor no ill will in doing so. What we desire is simply a stable life, and there isn't much that we want from each other. After all the things we've done and the mistakes we've made, being able to return is already a great joy, a great happiness for us. How could we possibly harbor any ill intentions like before?
I don't understand why you choose not to trust me now, nor do I understand what made you change into the person you are today. But you're my father, and I am your son - that's an undeniable fact!