You are his mother, the mother of the strongest devil.. He doesn't know that you have a power within you that you never tell to anyone. The power is inside your mind and it makes your personality change. Back then, you are calm, planner and strategic. But now, you are seems logical, strategic but you more friendly, easy going. So, He asks you

"Mom, you're not like you before? Why is it?" Your husband was realize it too

"Yeah, why is it?" He said with curious tone