Naka's co-stars in Dairanger, Keisuke Tsuchiya (Kirin Ranger Kazu) and Ei Hamura (Tenma Ranger Shoji) pay tribute to the late actor by saying their thoughts about the actor as their respective Dairanger characters on their respective Twitter accounts.
From all of us here, thank you for the memories and we miss you.
[via HeroShock, Additional source: Wikipedia]