According to Nikkan Sports, Arashi member Kazunari Ninomiya and actress Masami Nagasawa have been dating for about two years. Their relationship developed after they appeared together in Fuji TV's 2005 drama series "Yasashii Jikan." It appears to have started out as a sibling-like connection, but it blossomed into romance.

This is the first reported relationship for both celebrities. To avoid the inevitable publicity, they have kept their romance inside their homes. Although distance and their busy schedules have kept them mostly apart, they recently moved to the same area in Tokyo, which will give them more opportunities for spending time together.

The relationship has not yet been officially confirmed by either side.