Newly ditched Nozomi awakens from an alcohol binge naked and Mishima—the office's Most Wanted Ice Man—beside her. Nozomi wants to forget everything that transpired and tells Section Chief Mishima as much, so...

How come Nozomi ends up marrying Mishima?

In the Nai Hanayome series:
Horenai Hanayome (book 1)
Ikenai Hanayome (book 2)
Dakenai Hanayome (book 3)
Ochinai Hanayome (book 4)