Setsunai 

The feeling between bitter sweet, painful and wistful.

It comes from the Japanese dictionary. 

切ない

'Kim SeokjinxReader

'Not  a happy ending so don't bring your hopes high.

The more you insisted that you didn't want to get married, your father, kept insisting.  So he arranged you to Kim Seokjin, but what truth is he hiding?

You can also find this story on my Wattpad account @Hope_lunA