Will You Give Me a Wife at the Beginning of Honkai Impact?

My name is Ling Xi, the most powerful researcher in the Tianming community, dedicated to scientific research.

One day, Rita told me that Tianming had given me a wife.

Initially, I refused, but when I heard it was Xi'er, I accepted without hesitation.

But when I returned home, I discovered that the woman waiting for me wasn't Xi'er, but a forty-year-old white-haired nun...