HaLuki Nanai (Haruki Sato) is a Japanese actor.

Haruki's motivation for wanting to become an actor was that his older sister Mitohi Sato (LaLa Sweet of Love Travelers) was a magazine model, which sparked his interest in the entertainment industry. After graduating from high school at the age of 21, he started attending the talent training institute "Artist☆Artist". After taking a break from movies, he performed stage plays until 2014. In 2021, he returned to acting under the name "HaLuki Nanai" and is currently under agency U-8.