Yukiyoshi Ozawa was in "The Forest" which is also about Aokigahara (the suicide forest)
The name of the American Investment Group, Taylor Investestments, is a nod to the character Gary Sinise who portrayed (Detective Mac Taylor) on another CBS crime drama spin off series "CSI NY" (2004-2013).
The "Suicide Forest" has inspired three movies in a span of three years. They are, Shawn4Ever (2012), The Sea of Trees (2015), and The Forest (2016).