My Wife Is Actually My Guardian Angel! ?

[Anime-style light novel, no system, pure love. Daily love and fantasy main lines, narrated from the first-person perspective of the male or female protagonist] According to legend, everyone's soul will be accompanied by a guardian angel at the beginning of its birth, but ordinary people cannot know it and cannot touch it, but the guardian angel who has been silently guarding me for more than ten years suddenly appeared in my home. Moreover, this angel is unusually cute and a little silly. After learning about the situation in which she was trapped in this world, I decided to take her in and live together with her. However, as time went by, I learned that she actually became my guardian angel in the future and traveled through time. At the same time, I also discovered that she had not yet become a guardian angel in the present, so the story of living with them in the past and future began.