The couple were first reported to be dating in March 2013 by Sponichi. Nakashima who is a volleyball fan, was introduced to Shimizu by a mutual friend after watching a league match and they started dating soon after from the summer of 2011. The couple will be staying in a condominium apartment outside of Osaka after their marriage.
On the same day, Nakashima also released a handwritten statement through her agency where she mentioned that she had been dating Shimizu for three years before they got married. She pledged to be a supportive wife to Shimizu and asked for everyone's warm support.