How to Perfectly End a Contract Marriage

To bring back the person I love, I turned back time, and now I have a limited life.
I have only one year left.
Within that time, I must make him happy and then leave.
I thought, ‘If I connect him with the woman he loved in the past, he will be happy,’ I worked hard to bridge the gap between them.
But something went wrong.
“Please marry me, just for one year.”
Why is he proposing a contract marriage to me…?
“I have no intention of having more than one wife.”
He grabbed my wrist. The distance between us felt threatening like the flickering red shadow closing in.
“What I mean is, you will be my first and last, Charlotte.”