Shinka-ron is Akinori Nakagawa's box set DVD.
Himself is a musical based on the William Shakespeare play Hamlet. All twenty-four musical numbers are written by Akinori Nakagawa.
Blue Dream is an Akinori Nakagawa's musical. The play is consist of three part.
Title : Special X The disc contains Akinori Nakagawa's interview about Blue Dream and Himself.