Diluc is your husband,but as the years pass,you could notice that your husband is more cold and distant towards you since the day you get married with him.

One day,you were picking up the mail,you see a letter,on the back of the letter,it your name and the number of house where You and Diluc live at,you read the letter and it was a poem

It doesn't have any sign of the person who write it.The days pass,and then months,you continue to get letters of love,sometimes,they are flowers